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Chemistry Essays & Research Papers

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  • Chemistry - 425 Words Mark Derbaremdiker Mr. Tharian CP Chemistry Period 5 Chemistry and its relevance Chemistry is a branch of science deeply rooted into history. It has been studied for many years, but for an elongated period, informally and without much intent. Chemistry is defined as, “the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change…” ("Definition of... 425 Words | 2 Pages
  • chemistry - 1050 Words Candidate name…………………………………………………………………….. MINISTRY OF EDUCATION MASALA SECONDARY SCHOOL BOARD MOCK EXAMINATION 2014 SCIENCE 5124/3 PAPER 3 (CHEMISTRY) 1hour 15minutes Additional materials: Monday 30th July 2014. Answer paper INSTRUCTIONS TO CANDIDATES Write your name, centre number and candidate number at the top of this page all separate Attempt all questions in SECTION A and only TWO questions in SECTION B SECTION A (45 marks)... 1,050 Words | 7 Pages
  • chemistry - 3044 Words Lovely Professional University, Punjab Course Code Course Title Course Planner Lectures CHE883 ENVIRONMENT CHEMISTRY 15316::Pushp Lata Course Category Tutorials Practicals Credits Courses with numerical and conceptual focus 3.0 0.0 0.0 TextBooks Sr No Title Author T-1 Environmental Chemistry Edition Year Publisher Name Colin Baird, Michael Cann 4th 2008 W.H. Freeman and company Reference Books Sr No Title Author... 3,044 Words | 43 Pages
  • chemistry - 393 Words Source: Chemistry by C. Mortimer PP 1-5 Chemistry by R.S. de Borja PP 1-5 Definition of Chemistry Chemistry is concerned with the composition and the structure of substances and with the forces that hold this structure together. And the changes that undergoes with the energy involved in them. History Chemistry which emerged, took hundreds of years to develop the history of its development can be divided ranging... 393 Words | 2 Pages
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  • Chemistry - 2008 Words Studying Chemistry at UCL UNDERSTANDING THE PAST  CHALLENGING THE PRESENT  SHAPING THE FUTURE Why UCL, why UCL Chemistry, why London? Course Structure What you’ll do; timetable; assessment From being taught to deep learning Opportunities Why UCL? UNDERSTANDING THE PAST  CHALLENGING THE PRESENT  SHAPING THE FUTURE History Oldest university (1826) outside Oxbridge in England First inclusive UK university Founded on principle of educating anyone who would benefit Non-CofE,... 2,008 Words | 15 Pages
  • Chemistry - 677 Words CHAPTER # 1 Q.DEFINE CHEMISTRY. A. Chemistry, a branch of physical science, is the study of the composition, properties and behavior of matter. Chemistry is concerned with atoms and their interactions with other atoms, and particularly with the properties of chemical bonds. Chemistry is also concerned with the interactions between atoms and various forms of energy Q.DEFINE THE BRANCHES OF CHEMISTRY. * Physical chemistry is the study of macroscopic, atomic, subatomic, and particulate... 677 Words | 3 Pages
  • Chemistry - 1009 Words Unit 1 – Lesson 1 Chemistry Key Questions 1. Element Standard Notation # Of Electrons # Of Protons # Of Neutrons Sodium 23 11 Na 11 11 12 Chromium 24 Ca 26 26 27 ? Phosphorus 32 P 15 15 16 2. Fireworks; Which metals burn to produce these colours? Red – Lithium (Sr) Blue – Cesium (Cs) Pink – Potassium (K) Yellow/Green – Copper (Cu) Orange – Carbon (Ca) 3. Let’s say that the three bottles contain Fe(NO3)3, BaCl, and AgNO3. These are Iron (III) Nitrate, Barium... 1,009 Words | 5 Pages
  • Chemistry - 870 Words Chemistry (the etymology of the word has been much disputed)[1] is the science of matter and the changes it undergoes. The science of matter is also addressed by physics, but while physics takes a more general and fundamental approach, chemistry is more specialized, being concerned with the composition, behavior (or reaction), structure, and properties of matter, as well as the changes it undergoes during chemical reactions.[2] It is a physical science which studies... 870 Words | 4 Pages
  • chemistry - 670 Words Abstract By adding HCl to 2-methyl-2-butanol, through the Sn1 mechanism, 2-chloro-2-methylbutane is formed. Water, sodium bicarbonate and NaCl(aq) were then added to the 2-chloro-2-methylbutane to remove any of the excess water from the reaction. To confirm, a successful reaction, AgNO3 was added to the 2-chloro-2-methylbutane. A white precipitate formation confirmed a successful Sn1 reaction. Introduction Nucleophilic substitution reactions such as Sn1 and Sn2 allow us to convert one... 670 Words | 3 Pages
  • Chemistry - 1204 Words Chemistry * a science that dealing with the structure, composition and properties of items and with the transformations that they undergo * the composition and chemical properties of a substance * chemical processes and phenomena (as of an organism) Examples: - Digestion; enzymes promoting chemical reactions that power our bodies. Lifting your arm requires your body to make and burn ATP using oxygen with carbon dioxide as one of the waste gases produced. - The internal... 1,204 Words | 6 Pages
  • Chemistry - 404 Words Importance of chemistry : 1. Chemistry can improve the conditions of human life and even save lives. 2. Provides deeper knowledge. 3. * Plastics that are as strong as metals but light weight. * Personal care and household products * Polymers or various sizes and shapes * Metal alloys * Drugs from various ailment CONTRIBUTION OF CHEMISTRY : 1. Food and agriculture 2. energy production 3 . environment preservation 4 . education 5 . clothing 6. colors and... 404 Words | 3 Pages
  • Chemistry - 384 Words Explanation of the Multistep Synthesis of Benzilic Acid The synthesis of several complex organic compounds follows a multistep synthesis. "Multistep synthesis" refers to the procedure in which the product of one reaction serves as the starting material in the subsequent reaction. The multistep synthesis of benzilic acid begins with a conversion benzaldehyde to benzoin through a condensation reaction. The benzoin then oxidizes into benzil, which undergoes rearrangement to give benzilic acid.... 384 Words | 2 Pages
  • Chemistry - 470 Words Baking Project There are several chemical reactions taking place in the general baking of cakes. Every ingredient has its own function and causes a different reaction Synthesis: * Egg yolks (modify molecule’s structure) helps the oil-based and water-based components of the cake mix together. When eggs are cooked, the protein molecules become uncurled when exposed to heat and create new molecular bonds with other nearby protein molecules. When the egg is completely cooked, it helps form a... 470 Words | 2 Pages
  • Chemistry - 708 Words UNIVERSITI TUNKU ABDUL RAHMAN |Faculty |: |Faculty of Engineering & Science | |Unit Code |: |UEMK1013 | |Course |: |Chemical Engineering | |Unit Title |: |Chemistry for Engineering | |Year/ Semester |: |Year 1/ Trimester 1 | |Lecturer |: |Dr. Loh Han Chern... 708 Words | 6 Pages
  • Chemistry - 2104 Words Chemistry 42 Course Syllabus Introductory General Chemistry Santa Rosa Junior College Spring 2013 Section 5618 - Course Information Lecture W,F 7:30 – 9:00 PM (1999 Bech), Lab W 9:00 – 12:00 PM (1948 Bech) Instructor of Record: Dr. Valeria Martinovic My office is in 1914 Bech. My Spring office hours are Mondays 10:00-10:30 PM, Wednesdays 7:00-7:30am, 9:00-10:30am, Fridays 7:00-7:30am. Leave a message at any time by e-mail at [email protected] Course description:... 2,104 Words | 8 Pages
  • Chemistry - 46846 Words Project In Chemistry Larick E. Mahinay III – Perseverance Ms. Cristina C. Areglo Table of contents Part I I. Introduction II. Elements and Compounds III. Mixtures IV. Different Phases of Matter V. Properties of Matter VI. Concept of Matter Part II I. Periodic Table II. Electronic Configuration III. Development of Periodic Table IV. Chemical Symbols Part III i. Chemical Equation Rules in Balancing ii. Evidences of... 46,846 Words | 135 Pages
  • Chemistry - 1459 Words CHEMISTRY III : (CHEMISTRY & YOU) 1 PRETEST 1. The science that tackles the study of matter, its structure and the changes in composition that matter undergoes is a. Astrology c. Ecology b. Chemistry d. Physics 2. When a chemist performs an experiment, the quantity that is being tested is the a. control c. theory b. law d. variable 3. Juan is comparing how many kilos of rice can be contained in a sack. What process is he doing? a. counting c. measurement b.... 1,459 Words | 5 Pages
  • Chemistry - 1159 Words Chemistry Review (mid-term) 1. Use the equation for atomic mass to answer the following questions. (http://johnheilchem10.escuelacampoalegre.wikispaces.net/file/view/average+atomic+mass+calculations+-+3.pdf) 1. Argon has three naturally occurring isotopes: argon-36, argon-38, and argon-40. Based on argon’sreported atomic mass, which isotope do you think is the most abundant in nature? Explain. 2. Copper is made of two isotopes. Copper-63 is 69.17% abundant and it has a mass of 62.9296 amu.... 1,159 Words | 7 Pages
  • Chemistry - 762 Words Experiment 9 : 
The effect of substrate concentration on enzyme activity Objective To find out the relationship between the substrate concentration and the rate of reaction by determining the number of bubbles produce Hydrogen peroxide (H2O2) is a by-product of biochemical metabolism. An accumulation of hydrogen peroxide can be deadly, so it has to be decomposed. One of the decomposing factors is an enzyme called Catalase. Catalase breaks hydrogen peroxide into water and oxygen. The... 762 Words | 3 Pages
  • Chemistry - 714 Words HW - Chapter 1 Due: 1. Scientific Theory Part A Which is true about scientific theories? ANSWER: a theory is a model that explains the underlying reasons for observations and scientific laws a theory briefly summarizes past observations and predicts future ones a theory is a scientific opinion with very little observations to support it a theory is a method of learning that emphasizes reason as the way to understand the world none of the other answers apply 2.... 714 Words | 7 Pages
  • Chemistry - 1812 Words Absorbance of Light vs. Concentration of Colored Solution Introduction: Performing this lab showed the importance of light in virtual drug screening because light can be used in a variety of ways to obtain different kinds of information in research. Light can be used to determine the concentration of DNA or protein in solution, tag different objects such as cells, protein structures, or bacteria in order to determine whether there is a large amount of a certain substance, and to determine the... 1,812 Words | 5 Pages
  • chemistry - 532 Words  (Name) (Course Name) (Instructors Name) (Date) Summary of chemistry lab report Introduction The two factors which affect the yield of products in a chemical reaction is the amount of starting materials (reactants) and the percent yield of the reaction. Many experimental conditions for example temperature, and pressure can be adjusted to increase yield of the desired product, in chemical reaction, but because chemicals react according to fixed mole ratios( stoichometrically), the... 532 Words | 2 Pages
  • Chemistry - 1945 Words ccsenet.org/ijc International Journal of Chemistry Vol. 2, No. 2; August 2010 One-pot Preparation of β–amino Carbonyl Compounds by Mannich Reaction Using MgO/ZrO2 as Effective and Reusable Catalyst Deepak.M. Nagrik (Corresponding author) Department of Chemistry, PLIT and MS Buldana-443001, M.S., India E-mail: [email protected] D.M.Ambhore P.G.Department of Chemistry, Jijamata Mahavidyalaya Buldana-443001, M.S., India Manoj.B. Gawande (Corresponding author) Departamento de... 1,945 Words | 7 Pages
  • Chemistry - 2616 Words Chapter 6 Chemical Reactions and Quantities The Mole General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 1 Collection Terms A collection term states a specific number of items.  1 dozen donuts = 12 donuts  1 ream of paper = 500 sheets  1 case = 24 cans General, Organic, and Biological Chemistry 2 A Mole of Atoms A mole is a collection that contains  the same number of particles as there are carbon atoms in 12.0 g of carbon 12C  6.02 x 1023 atoms of... 2,616 Words | 19 Pages
  • Chemistry - 356 Words Separation of a Mixture of Solids PURPOSE: The purpose of this lab is to familiarize ourselves with the techniques associated with separating a mixture of different solids. We will learn how the unique properties of substances can aid in this process and help us distinguish each pure substance from one another. DATA OBSERVATIONS CALCULATIONS CONCLUSION/DISCUSSION QUESTIONS A. How did your proposed Procedures or flow charts at the beginning of this experiment compare to the actual... 356 Words | 2 Pages
  • Chemistry - 649 Words Module 4: 10. Strong Bases: NaOH, KOH, Na2CO3, NaHCO3, Na3PO4, NaHPO4, Strong Acids: Fe(NO3)3, HCL, HNO3, Al(NO3)3, NiCl2, H2SO4 11. Acidic Neutral Basic NaCl KNO3 NaOH HC2H3O2 Na2CO3 NaC2H3O2 NaHCO3 Fe(NO3)3 NaNO3 Na3PO4 HCl MgSO4 KOH HNO3 Na2SO4 NaHPO4 CuSO4 NaNO2 CoCl2 Al(NO3)3 NiCl2 H2SO4 KCl NH4Cl 12. CuSO4 CuCO3.Cu(OH)2(s) + 2 H2SO4(aq) ----> 2 CuSO4(aq) + CO2(g) + 3 H2O(l) Na3PO4 Na3PO4 (aq) + 3H2O (l) --> H3PO4 (aq) +... 649 Words | 3 Pages
  • Chemistry - 765 Words Isotopes and average atomic mass Isotope: element variations with different atomic mass but same atomic number Isotopic Abundance: the relative amount in which each isotope of an element Calculating: given 2 isotopes of an element [B: 10.01u] [B: 11.01u] 1) Given average atomic mass: 10.81u If given percentages, you can find average atomic mass by adding each portion 2) Set variables for unknown values Let x represent % abundance for 10/5 B Let 1-x represent % abundance for 11/5 B... 765 Words | 3 Pages
  • Chemistry - 832 Words JEET SCIENCE ACADEMY CHOWK AZAM (LAYYAH) TIME 2.5 Hr CHEMISTRY 1st YEAR CH # 1,2,9,10 Marks: 85 G.Super . 1 Name…………………………………………...... Objective ROLL NO. ………………………………. Q.NO.1. Encircle the correct answer? (1×17=17) 1. Atoms of which one of the follelement have independent existance: (A) Flourine (B) Krypton (C ) Oxygen (D) Nitrogen 2.18g glucose is... 832 Words | 3 Pages
  • Chemistry - 53810 Words The Student’s Guide to HSC Chemistry c Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. Licensed for free distribution under the GFDL I The Student’s Guide to HSC Chemistry About the Guide The Student’s Guide to HSC Chemistry is a brand new form of... 53,810 Words | 190 Pages
  • Cai in Chemistry - 3453 Words 1 COMPUTER ASSISTED INSTRUCTION IN CHEMISTRY IN RELATION TO LEARNERS’ PERSONALITY Dr.R.Sivakumar Abstract The aim of this study was to find out the effectiveness of Computer Assisted Instruction in Teaching Chemistry In Relation To Learners’ Personality. The sample consisted of 40 students in Control group and 40 students in Experimental group. The data were collected using appropriate tools and it was analyzed by t’ and F’ test. The finding is that the achievement scores of Experimental... 3,453 Words | 17 Pages
  • Importance of Chemistry - 652 Words Importance Of Chemistry - College Essay - Adarshjj2 Page 1 of 2 FREE ESSAYS AND RESEARCH PAPERS Search 600,000 Essays Saved Docs Like 55k 874 692 SEARCH Join Login Writing Service Resources Help Contact Us Send Get Better Grades Today By Joining OPPapers.com and Accessing Over 600,000 Articles and Essays! GET BETTER GRADES Home Page » Science » Chemistry Research Papers Importance Of Chemistry Importance Of Chemistry SUMMARY FOR GRADE 7 FIRST SEMESTER... 652 Words | 4 Pages
  • Chemistry Syllabi - 1675 Words CH 222 ANALYTICAL CHEMISTRY I SYLLABUS COURSE OUTLINE: a. Introduction (1.5 hours) Classification of types of analysis, role and importance of analytical chemistry in various aspects of life. b. Steps in a typical quantitative analysis (10 hours) Emphasis on sampling protocol, sample preparation, wet chemistry methods, statistical evaluation of data. c. Review of concepts of stoichiometry (2 hours) Mole concept, concentrations, dilution and aliquots d. Review of concepts of... 1,675 Words | 8 Pages
  • Chemistry for Beginners - 561 Words CHEM 105 Chemistry in the Human Environment CRN 80464 Fall 2013 General Description CHEM 105 Chemistry in the Human Environment is a onesemester non-mathematical course for liberal arts and non-science majors, which fulfills G.E. requirements in physical sciences. The course stresses a humanistic approach to chemistry, introducing concepts via important social and environmental contexts. Students need not have any previous exposure to chemistry. Access Requirements No campus visits are... 561 Words | 2 Pages
  • effects of chemistry - 433 Words The gifts of chemistry are a boon to mankind. Its applications in home and industry are many. Right from purified drinking water and motor car to cane sugar and mobile phone, all these have been made possible only through processes in chemistry at some stage or other of production. New discoveries, processes, and products are an integral part of this fascinating discipline. It offers a fertile ground for those endowed with intellectual curiosity and a passion for scientific research. you... 433 Words | 2 Pages
  • Clinical Chemistry - 598 Words Name: Instructor: Course: Date: Introduction Ever since I was in school I always wanted to be a medical doctor. Most of my teachers used to ask me about my future ambitions, and I would always tell them that I wanted to be a doctor. The reason for me wanting to be a doctor was the fact that I liked to the idea of treating people without any charges. To me this was a very humanitarian action to do. Therefore, when four of my family members died as a result of blood cancer, I decided that I... 598 Words | 2 Pages
  • Chemistry Project - 596 Words All India Senior Secondary Examination Examination 2010 - 2011 An investigatory project on Chemistry PROJECT: TO STUDY THE PRESENCE OF OXALATE ION CONTENT IN GUAVA FRUIT AT DIFFERENT STAGES OF RIPENING. Submitted by: ANUKRITI SHARMA Class- XII – A (sci.) Roll no: 06 Air force school Chakeri, Kanpur(up) CERTIFICATE This is to certify that ANUKRITI SHARMA has satisfactorily completed the project in CHEMISTRY on ‘OXALATE ION´ prescribed by the AISSCE course in this school in... 596 Words | 3 Pages
  • Chemistry Sy - 323 Words Chemistry 101 General Chemistry Fall 2013 –Syllabus S. Bakshandeh Office Hours: MW, 12:00–12:35 pm & T; 1:40-2:15 pm Room 92032 and/or Lab 92011. Email: [email protected] – The best way to reach me is by email. Please indicate your full name and section number in the “Subject/Re” box. I will not open emails without proper identification. Blurb: Welcome to your first course in college chemistry. In this course, we will be exploring laws, theories, and principles of chemistry as... 323 Words | 3 Pages
  • IB Chemistry - 412 Words Using colorimetry to find the order of a reaction introduction Coloured solutions absorb some of the wavelengths in the visible region of the electromagnetic spectrum. A colorimeter can be used to measure the amount of light absorbed by a solution (the absorbance) and this is proportional to the concentration of the coloured species present. In this experiment you will use a colorimeter to investigate the reaction between bromine and methanoic acid:- Br2 (aq) + HCOOH (aq) ↓... 412 Words | 2 Pages
  • Chemistry practical - 332 Words Clare Chong P2 ! ! ! ! ! Chemistry Practical 4: Measuring rate of reaction Aim of experiment: To determine the rate of reaction when the concentration of I2 increases. ! ! ! Chemical equation: 2Fe3+ + 2I- --> 2Fe2+ + I2 ! ! ! Apparatus & materials: Apparatus Quantity 50ml Pipette 1 10ml Pipette 1 Pipette bulb 1 100ml beaker 2 50ml Burette 1 250ml Conical Flask 6 Timer 1 Distilled water 100ml or more 50ml... 332 Words | 13 Pages
  • Green Chemistry - 735 Words If We Had Known About Green Chemistry In 1951, How Would Things Be Different Today? Green Chemistry is the making of chemical products that reduces or eliminates the use and production of hazardous substances in the designing, making, and use of chemical products. It involves the designing and re-designing of chemical creation and chemical products to prevent pollution which will therefore solve environmental problems. Green Chemistry is environmentally safe and has very little side effects... 735 Words | 3 Pages
  • Chemistry Lab - 1161 Words INTRODUCTION: The purpose of this experiment is to measure the formation constant of the tetraamminecopper(II) ion by colorimetry. Anhydrous copper sulfate (CuSO4) is white, which means that it does not absorb light in the visible region of the spectrum. The hydrated copper sulfate (CuSO4 - 5H2O) is blue. The structure of the compound can be represented more accurately as Cu(H2O)4 SO4 - H2O where four water molecules are bound to the copper ion and the fifth is a water of crystallization.... 1,161 Words | 5 Pages
  • organic chemistry - 2747 Words Name Naza Moore ID# 24120389 Lab# 2 Lab instructors Alecia Palmer and Donald Burke Course Instructor Maureen Wilson Lab Title Preparation of cyclohexene from cyclohexanol Aim Preparation of an Alkene by dehydration of an alcohol in the presence of a catalyst. Calculate the percentage recovery of products. Test for purity and identification of products. Abstract Cyclohexene and cyclohexanol are both colourless aromatic compounds. The major difference between the two is the... 2,747 Words | 11 Pages
  • Coordination Chemistry - 8334 Words COORDINATION CHEMISTRY [pic] Coordination compounds are the backbone of modern inorganic and bio-inorganic chemistry and chemical industry. The chemistry of coordination compounds is an important and challenging area of modern inorganic chemistry. During the last fifty years, advances in this area, have provided development of new concepts and models of bonding and molecular structure, novel breakthroughs in chemical industry and vital insights into the functioning of critical... 8,334 Words | 37 Pages
  • Green Chemistry - 454 Words Green Chemistry Many companies all over the world produce chemicals for their products that are harmful to the environment, human health, and to all living species. Green Chemistry is the use of chemistry for the prevention of chemical pollution to the environment by using chemicals that are benign, or not harmful. The Environmental Protection Agency (EPA) states that the mission of Green Chemistry is, "To promote innovative chemical technologies that reduce or eliminate the use or... 454 Words | 2 Pages
  • Chemistry Dilutions - 307 Words Name, Date, Hour Lesson Objective: Key Vocabulary: Lesson pH and dilutions Science Starter: Determine the pH of .0103M H3PO4 solution in water. Remember to look at the H+ count. Box 1 In a dilution, the number of solute particles does not change, just the concentration with respect to the volume. This relationship is _____________________ proportional. Initially, there is 275mL 0.125M stock solution of a substance. -Determine the amount of moles of solute present. -What is the... 307 Words | 2 Pages
  • What Is Chemistry - 1621 Words What is Chemistry? Chemistry is the study of matter and energy and the interactions between them. This is also the definition for physics, by the way. Chemistry and physics are specializations of physical science. Chemistry tends to focus on the properties of substances and the interactions between different types of matter, particularly reactions that involve electrons. Physics tends to focus more on the nuclear part of the atom, as well as the subatomic realm. Really, they are two sides of... 1,621 Words | 5 Pages
  • Chemistry Final - 404 Words 1) How many hydrogen atoms are represented in the formula (CH3)2CH2? 1) _______ A) 8 B) 6 C) 9 D) 5 2) Which has the highest percent mass of Cl? 2) _______ A) C2Cl6 B) CCl4 C) C2Cl4 D) C2Cl2 3) The correct formula for Sodium Nitride is: 3) _______ A) Na3N B) NaNO2 C) NaNO3 D) Na2NO3 4) How many moles of NO3 are there in 6.2g? 4) _______ A) 0.05 B) 10 C) 0.10 D) 384 5) Consider the following equation: 4NH4 + 5O2 → 4 NO + 6H2O How many moles of... 404 Words | 4 Pages
  • chemistry project - 572 Words Presence of oxalate ions in Guava Chemistry Investigatory Project Published by M.A.EBENEZER A chemistry investigatory project on the presence of oxalate ions in guava with all the required sample readings and observations, graphic customized and ready to print.( Though you will need to change the credentials.) See More INTRODUCTION Guavas are plants in the Myrtle family (Myrtaceae) genusPsidium (meaning "pomegranate" in Latin), whichcontains about 100 species of tropical... 572 Words | 2 Pages
  • Chemistry Scientists - 347 Words  Democritus was born in 460 BCE (estimated) in Abdera, Thrace. Democritus also known as the “Laughing Philosopher”. His theory was the matter could not be divided into smaller and smaller pieces forever, eventually the smallest possible piece would be obtained, and the piece would be invisible. He named the small piece of matter “atomos” meaning “not to be cut”. But as the time continued Aristotle, another Greek philosopher, thought that the atomic theory was... 347 Words | 1 Page
  • Nuclear Chemistry - 600 Words Nuclear Chemistry Imagine the majority of Earth being quarantined off and people having to live in specified areas to avoid harmful radiation that originated from nuclear energy/waste. The integration of nuclear energy/medicine is largely controversial among people. Every side to the argument has its benefits as well as its negative consequences. Nuclear energy should not be used in society because of the threat it poses to thousands of people. In contrast, nuclear medicine has positive aspects... 600 Words | 2 Pages
  • Branches of Chemistry - 2559 Words Atmospheric chemistry is a branch of atmospheric science in which the chemistry of the Earth's atmosphere and that of other planets is studied. Environmental chemistry is the scientific study of the chemical and biochemical phenomena that occur in natural places. It can be defined as the study of the sources, reactions, transport, effects, and fates of chemical species in the air, soil, and water environments; and the effect of human activity on these. Environmental chemistry is an... 2,559 Words | 9 Pages
  • Chemistry 12 - 1257 Words Chemistry 12 Unit 1 - Reaction Kinetics Chemistry 12 Worksheet 1-3 - Reaction Mechanisms 1. It is known that compounds called chlorofluorocarbons (C.F.C.s) (eg. CFCl3) will break up in the presence of ultraviolet radiation, such as found in the upper atmosphere, forming single chlorine atoms: CFCl3  CFCl2 + Cl The Cl atoms then react with Ozone (O3) as outlined in the following mechanism. Step 1: Step 2: Cl + O3  ClO + O2 ClO + O  Cl + O2 (single "O" atoms occur naturally in the... 1,257 Words | 8 Pages
  • Green Chemistry - 2382 Words Abstract Green chemistry for chemical synthesis addresses our future challenges in working with chemical processes and products by inventing novel reactions that can maximize the desired products and minimize by-products, designing new synthetic schemes and apparatus that can simplify operations in chemical productions, and seeking greener solvents that are inherently environmentally and ecologically benign. Introduction Nowadays, one can hardly turn on the television or open a newspaper... 2,382 Words | 9 Pages
  • Chemistry Lab - 687 Words Chemistry 121 Colligative Properties Lab Demonstration of Selected Calculations from Choice I Determination of Kf for Naphthalene To determine the Kf for naphthalene, we need to find the difference in the freezing point of pure naphthalene and the solution of 1,4-dichlorobenzene in naphthalene. Let's say that we did this experiment, used 1.00 g 1,4-dichlorobenzene in 10.00 g naphthalene, and found that the freezing temperature of pure naphthalene was 78.2°C, while that of the solution was... 687 Words | 2 Pages
  • Chemistry Project - 427 Words Name: Shahid Hussain Subject: Chemistry Teacher: Dr Ramani Topic: Comparing Solutions Saturated Solutions | A solution that can hold no more of the solute at a particular temperature is said to be a saturated solution at that temperature. | When someone adds sugar to iced tea, the sugar disappears. If you add one teaspoon of sugar to iced tea, you get an unsaturated solution. If you... 427 Words | 2 Pages
  • Concepts of Chemistry - 1274 Words  Chemistry 101 Chapter 4 Practice Test February 2013 1. A 20.0-g sample of HF is dissolved in water to give 2.0  102 mL of solution. The concentration of the solution is: a) 1.0 M b) 3.0 M c) 0.10 M d) 5.0 M e) 10.0 M Ans: d) 5.0 M Page: 4.3 2. Which of the following aqueous solutions contains the greatest number of ions? a) 400.0 mL of 0.10 M NaCl b) 300.0 mL of 0.10 M CaCl2 c) 200.0 mL of 0.10 M FeCl3 d) 200.0 mL of 0.10 M KBr e) 800.0 mL of 0.10 M sucrose... 1,274 Words | 7 Pages
  • Analytical Chemistry - 1126 Words Analytical Chemistry Analytical Chemistry is the branch of chemistry principally concerned with determining the chemical composition of materials, which may be solids, liquids, gases, pure elements, compounds, or complex mixtures. In addition, chemical analysis can characterize materials but determining their molecular structures and measuring such physical properties as pH, color, and solubility. Wet analysis involves the studying of substances that have been submerged in a solution and... 1,126 Words | 4 Pages
  • Chemistry and Zinc - 933 Words  Pre Lab Experiment 8 DETERMINATION OF % COMPOSITION OF PENNIES USING REDOX AND DOUBLE DISPLACEMENT (PRECIPITATION) REACTIONS Objectives: 1. Learn how to determinate the percent composition 2. Learn how to get the percent using oxidation reduction and double reactions 3. To become more familiar with the use titration techniques 4. To learn how to get the salt out of an quimical Background: To develop and utilize procedures to determine the percent composition, of ZnCI2. As well... 933 Words | 4 Pages
  • Polymer Chemistry - 535 Words Polymer Chemistry Name of Career: Polymer Chemist Specialized Training: Chemical synthesis & properties of polymers and macromolecules Salary: $78,000 per year Location Restrictions: Work is done in a laboratory setting Background Required: Need; Bachelor’s Degree in chemistry, chemical engineering, or synthetic engineering & prior lab experience. To continue your career, it is recommended to get a master’s or doctoral degree and courses in communication/presentation skills. Polymer... 535 Words | 2 Pages
  • organic chemistry - 2474 Words Organic chemistry is a chemistry subdiscipline involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms.[1][2] Study of structure includes using spectroscopy and other physical and chemical methods to determine the chemical composition and constitution of organic compounds and materials.[3] Study of properties includes both physical properties and chemical properties, and... 2,474 Words | 8 Pages
  • Chemistry Lab - 746 Words  Name: Marisa Malazzo Date: 7/17/14 Exp 1: Observations of Chemical Changes Lab Section: 76426 Data Tables: Part 1: Chemicals Well No. Observations of the Reaction A. NaHCO3 + HCl no color change, some small bubbles formed B. HCl + BTB changed a yellowish orange color, no bubbles or precipitation C. NH3 + BTB changed a blue color D. HCl + blue dye changed a green color E. Blue dye + NaOCl no chemical change, only blue color appeared with the 1... 746 Words | 5 Pages
  • Chemistry Review - 4282 Words What You Need To Know for the Chemistry Regents Exam The Test The Chemisty Regents Exam is broken down into three sections: Part A: 35 mulitple choice questions from all units covered over the course of the school year. Part B: Approximately 25 questions, with a mix of short answer and multiple choice. Questions focus on the Reference Tables, graphing, and laboratory experiments. Part C: Approximately 15 short answer questions, most broken down into smaller parts. This is often... 4,282 Words | 17 Pages
  • Chemistry Essay - 604 Words Becoming a Greek philosopher I would never of thought that I was best known for my atomic theory of the universe, and leave a lasting impact on western civilization throughout my time. I was born in Abdera, Greece around the year 460 BC. My journeys led to far off places that include Egypt, where I learned geometry from the high priests, and also traveled throughout Persia and India. My literature extended over a period and produced over 65 works, including essays on mathematics, astronomy,... 604 Words | 2 Pages
  • Chemistry Paper - 1405 Words UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Level *0281936391* CHEMISTRY Paper 5 Planning, Analysis and Evaluation Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams, graphs or rough working. Do not use staples, paper clips,... 1,405 Words | 7 Pages
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  • Careers in Chemistry - 488 Words Chemistry is one of those subjects in school that you can take in college at an advanced level. Taking Chemistry can benefit a person in ways that you might have not thought. Chemists might actually make more money than you might have thought. You might be interested in a chemistry career, so read the following and see for yourself if chemistry is the career path for you. The Product Development Chemist develops new products and technologies, improves older products or their methods of... 488 Words | 2 Pages
  • Chemistry in Engineering - 477 Words All India Council for Technical Education (AICTE) vested with statutory powers by virtue of the AICTE Act 1987, in pursuance of its clause 10(2) has main objective of bringing about uniformity in the curriculum of engg. in hundreds of technical institutions/universities spreading across the country . With this view, the AICTE has formulated a model curriculum / guidelines /regulations at the level prepared by All India Board of UG Studies in E&T with working groups composed of experts from... 477 Words | 2 Pages
  • organic chemistry - 534 Words CHEM 2018 Organic Lab Part 2 Experiment 7: Diethyl n- Butylmalonate Lab Partner: Reference: Williamson K.L., &... 534 Words | 4 Pages
  • Chemistry Lab - 367 Words Procedure Access the virtual lab and complete the experiments. Part One (Flame Test): 1. Create and complete a data table for Part One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame: Barium-green Calcium-red Sodium-yellow Rubidium-purple Potassium-blue Lithium-pink 2. Identify each unknown from Part One of the lab and briefly explain why you identified each unknown as you did.: Unknown 1-yellow. I think it is Sodium... 367 Words | 2 Pages
  • Chemistry Assessment - 1027 Words Back Print Name Class Date Assessment Chapter Test B Chapter: Matter and Change PART I In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question. ______ 1. Chemistry is a natural science that deals with the study of a. living things and their life processes. b. the physical features of Earth. c. the composition, structure, properties, and changes of matter. d. the composition, motion, and relative... 1,027 Words | 16 Pages
  • Alchemy to Chemistry - 508 Words ALCHEMY TO CHEMISTRY Can we say that alchemy and chemistry are two different things? Actually no, we can’t. Alchemy is the pioneer of today’s modern chemistry. As the time passed alchemy has changed and developed to form Chemistry. Therefore we shouldn’t think that they are two different subjects. In this article, first of all you will learn how alchemy was found and evolved .After that how it transitioned from alchemy to chemistry and finally the similarities and differences between them.... 508 Words | 2 Pages
  • The Chemistry of Fireworks - 2785 Words A firework is an incendiary device or material that can be used forsignalling orentertainment. There are chemicals located in the nose ofthe rocket that explode, producing the colours seen. The art of fireworks, first originated in ancient China, with thefirst explosive being made from a mixture of black powder during theSung dynasty. It is believed that the explosive mixture was created bya combination of sulfur, saltpeter and charcoal. The Chinese foundthat the combination of these... 2,785 Words | 11 Pages
  • Chemistry Lab - 624 Words The purpose of this lab was to see which solutions are soluble and which are not. We were able to see this by mixing certain solutions together and observing changes that occurred. The procedure for this experiment included a few different steps. The first steps were to add the nitrate solutions into the lettered parts of the 96-well plate. Once you were done with that, you were supposed to add the sodium solutions to the numbered parts of the 96-well plate, so that the solutions were added... 624 Words | 2 Pages
  • Solutions in Chemistry - 521 Words Solutions Solutions are a combination of solvents and solutes. When a solute dissolves into a solvent, the combined product of the two reactants is called a solution. The definition of a solute is the reactant that's being dissolved. The only difference from a solute and a solvent is that the solvent is the one that's doing the dissolving. Molecules randomly flow in all directions until there is an equal concentration throughout the solution. The dissolving process can vary... 521 Words | 2 Pages
  • Cooking Is Chemistry - 428 Words Terrius Watson Dr. Kitchens Chemistry 4 March 2013 Chemistry Matters Cooking is chemistry. Everything is essentially chemical reactions. If you don’t mix the correct amount of grams of one element with another the product can result to be horrendous. The formula of sugar is C12H22O11. When you mix a certain amount of that into a solution of water with the addition of tea you a drink called sweet tea. Let’s say you mix add more C12H22O11 than water. Then your product will be syrup; a... 428 Words | 2 Pages
  • Chemistry Formula - 834 Words ΔT1 = Kfm where Kf is a constant that depends on the specific solvent and m is the molality of the molecules or ions solute. Table 1 gives data for several common solvents. Table 1. Molal Freezing Point and Boiling Point Constants | Solvent | Formula | Freezing Point (°C) | Kf(°C/molal) | Boiling Point (°C) | Kb(°C/molal) | Water | H2O | 0.0 | 1.86 | 100.0 | 0.51 | Acetic acid | CH3COOH | 17.0 | 3.90 | 118.1 | 3.07 | Benzene | C6H6 | 5.5 | 4.90 | 80.2 | 2.53 | Chloroform | CHCl3 |... 834 Words | 3 Pages
  • Chemistry Chapter2 - 955 Words Extracted from the notes of Dr. Sylvia Eramis Dasalla San Pedro College GENERAL INORGANIC CHEMISTRY (CHEM 100) Chapter 2 Matter & Energy Matter - is anything that occupies space and has mass Mass is the measure of the amount of matter in an object. Weight is the measure of the gravitational force for the matter in an object. Phases of Matter * Solid (s) * Liquid (l) * Gas (g) Properties of Solids, Liquids, and Gases Property | Solid | Liquid | Gas |... 955 Words | 6 Pages
  • Importance of Chemistry - 911 Words SUMMARY FOR GRADE 7 FIRST SEMESTER Importance of Chemistry Chemistry is an important branch of science. Chemistry deals with the matter that form our environment and the transformation that the matter undergoes. Chemistry is therefore, useful in understanding the changes taking place in the constituents of the environment and the resulting advantages. Chemistry is connected with composition, structure and properties of the matter. In fact it is a science of atoms and molecules. Organic... 911 Words | 3 Pages
  • Chemistry and Importance - 1955 Words IUBAT- International university of Business Agriculture and Technology Assignment No-01 Course name- General Chemistry “Topic” The importance of Chemistry in our daly life Submitted to Dr.Mohammad Harun-Ur-Rashid Submitted by Group-Royals Chemistry: The chemistry is the study of substances specially their structure, properties, transformations and the energy accompanying these transformation. Chemistry is very important within our daily lives. We are using it all of... 1,955 Words | 7 Pages
  • Chemistry Project - 424 Words Company #1: Neils Bohr Equation: 3Na2CO3 + 2AlPO4 = 2Na3PO4 + Al2(CO3)3 Reaction: Double Displacement Company #2: Hello Equation: C5H12 + 8O2 = 5CO2 + 6H2O Reaction: Combustion Company #1 Neils Bohr 3Na2CO3... 424 Words | 2 Pages
  • Forensic Chemistry - 8438 Words Kayla Adkins Forensic Chemistry Exam 2 I have been honest and observed no dishonesty. 1. In specific detail, describe a published procedure for the definitive identification of Heroin utilizing gas chromatography-mass spectroscopy (GCMS). Heroin is a white crystalline powder with no odor and a bitter taste. It is a derivative of morphine in that the –OH (hydroxyl group) is replaced by an acetyl group, -OCOCH3 and has a molecular formula is C21H23NO5 with a molecular weight of... 8,438 Words | 25 Pages
  • Chemistry Test - 792 Words Test #3 Chapter 2: 1) What is matter? 2) What is mass? 3) Matter that has a uniform and definite composition is called a ______. Give an example. 4) A quality/condition of a substance that can be observed/measured without changing the substance is a ________ __________. Give examples. 5) What are the three states of matter? Put the correct state of matter in each box. 6) What is the difference between gas and vapor? 7) What is a physical change? Give an example. 8) A physical... 792 Words | 3 Pages
  • Chemistry of Hairspray - 1130 Words The chemistry of hairspray What is hairspray: introduction Hair spray (or hair lacquer) is a common household aqueous solution that is used to keep hair stiff or in a certain style. Weaker than hair gel, hair wax, or glue, it is sprayed to hold styles for a short period of time. Using a pump or aerosol spray nozzle it sprays evenly over the hair. Hairspray was first developed and manufactured in 1948 by Chase Products Company, based in Broadview, Illinois.Its active ingredient is a suitable... 1,130 Words | 4 Pages
  • Chemistry and Life - 1075 Words Describe the concept of atoms and molecules as a basis for the physical and chemical prosperities of living and non-living things. The entire universe consists of matter, everything from planets and stars, to trees, water and organisms. Matter is comprised of atoms, the smallest subunit of elements, which can be singular or molecular to form larger units. Non-living things, such as a red housing brick, or a metal zip do not require any extra elements to hold shape or produce energy and they... 1,075 Words | 3 Pages
  • Chemistry and Its Importance - 484 Words Question: What Is the Importance of Chemistry? What is the importance of chemistry? Why would you want to learn about chemistry? Chemistry is the study of matter and its interactions with other matter and energy. Here's a look at the importance of chemistry and why you should study it. Answer: Chemistry has a reputation for being a complicated and boring science, but for the most part, that reputation is undeserved. Fireworks and explosions are based on chemistry, so it's definitely not a... 484 Words | 2 Pages
  • Analytical Chemistry - 671 Words CHM 256: BASIC ANALYTICAL CHEMISTRY TUTORIAL 1: INTRODUCTION: ANALYTICAL CHEMISTRY 1. What is chemical analysis? 2. Differentiate between qualitative and quantitative analysis (Oct 2008, 2009, Dec 2009, Apr 2010) 3. Give 7 steps in performing any chemical analysis (Apr 2010) 4. Briefly explain how to prepare the following solutions: a) 1.0 L 10.50 % (w/v) aqueous CH3CH2CH2OH (answer : 105 g) (Oct 2006, Oct 2007, Oct 2008) b) 500 mL 2.0 M H2SO4 from a commercial reagent, at 90% (w/w)... 671 Words | 4 Pages
  • Sustainable Chemistry - 7070 Words Toward Sustainable Chemistry Terry Collins* Chemistry has an important role to play in achieving a sustainable civilization on Earth. The present economy remains utterly dependent on a massive inward flow of natural resources that includes vast amounts of nonrenewables. This is followed by a reverse flow of economically spent matter back to the ecosphere. Chemical sustainability problems are determined largely by these economy-ecosphere materials flows (see the figure, below), which... 7,070 Words | 26 Pages
  • Chemistry Syllabus - 1107 Words Chemistry GENERAL CHEMISTRY: Atomic Structure and elementary quantum mechanics: Blackbody radiation, Planck’s radiation law, photoelectric effect, Compton Effect, de Broglie’s hypothesis, Heisenberg’s uncertainty principle. Postulates of quantum mechanics, Schrodinger wave equation and a particle in a box, energy levels, wave functions and probability densities, Schrodinger wave equation for H-atom, Separation of variables, Radial and angular functions, hydrogen like wave functions, quantum... 1,107 Words | 4 Pages
  • Importance of Chemistry - 435 Words The importance of chemistry, or any other area of study, depends entirely on how relevant it is to some desired outcome. If you wished to create a new type of plastic, chemistry would be highly important, but if you wished to develop a new music genre, chemistry would probably be of no importance at all. It is extremely important. That aspirin or tylenol you may take for a headache was made by chemists, as are antibiotics, and other prescription meds. Not only are chemists in the drug trade,... 435 Words | 2 Pages
  • Role of Chemistry - 1113 Words A. Role of Chemistry in Society Applications of chemical science have contributed significantly to the advancement of human civilization (1, 2, 3). With a growing understanding and ability to manipulate chemical molecules, the post-World War II chemist was considered a societal problem solver. They synthesized crop-enhancing agricultural chemicals to ensure a constant and viable food supply. They played a significant role in the eradication of deadly diseases by developing life-saving... 1,113 Words | 5 Pages
  • Chemistry studies - 2700 Words 1. Give the percentage of each component present in air. The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth's gravity. Theatmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night (the diurnal temperature variation). The common name given to the atmospheric gases used in breathing and photosynthesis is air. By... 2,700 Words | 9 Pages
  • Chemistry Igcse - 1845 Words 1) Demonstrate understanding of the terms atom and molecule. Atom= Smallest Unit of Matter Molecule= 2 or more atoms chemically bonded. 2) Describe paper chromatography. 3) Interpret simple chromatograms. A method used to separate a Solution, using a Paper and a beaker of water. The Substances in the Paper go up depending on their Mass. We can say that a Solution has the same substance as another solution because they form a line of the same height. 4) Describe methods of... 1,845 Words | 9 Pages
  • Chemistry and Solution - 54729 Words CHEMISTRY HIGHER SECONDARY - FIRST YEAR VOLUME - I REVISED BASED ON THE RECOMMENDATIONS OF THE TEXT BOOK DEVELOPMENT COMMITTEE A Publication Under Government of Tamilnadu Distribution of Free Textbook Programme (NOT FOR SALE) Untouchability is a sin Untouchability is a crime Untouchability is inhuman TAMILNADU TEXTBOOK CORPORATION College Road, Chennai - 600 006 © Government of Tamilnadu First Edition - 2004 Revised Edition - 2007 CHAIRPERSON & AUTHOR Dr. V.BALASUBRAMANIAN... 54,729 Words | 164 Pages
  • Chemistry work - 393 Words HW: p.491(1-7) 1. Compare the general properties of acids with the general properties of bases. Acids: Aqueous solutions of acids have a sour taste. Acids change the color of acid-base indicators. Some acids react with active metals and release hydrogen gas,H2. Acids react with bases to produce salts and water. Acids conduct electric current. Bases: Aqueous solutions of bases taste bitter. Bases change the color of acid-base indicators. Dilute aqueous solutions of bases feel... 393 Words | 2 Pages
  • Organic Chemistry - 255 Words Course Number: Course Name: GE304 FUNDAMENTALS OF MATERIALS SCIENCE AND ENGINEERING Course Description: Structure and composition of materials (metals, polymers, ceramics and composites). Processing, properties and behavior in service environments. No. of Units for Lecture and Laboratory: 3 units lecture No. of Contact Hours per week 3 hours lecture Prerequisites General Chemistry, Physics 2 Course Objectives At the end of the course the student must be able to: 1. Identify the importance... 255 Words | 1 Page
  • The Importance of Chemistry - 306 Words important of chemistry in our future career a important of chemistry in our environment chemistry is used in many ways in computers also.for example.,we use many elements like silicon,zinc,aluminium,copper etc.,. in designing and in developing the hardware of computer. Computer Engineering In the last 30 years, information technology, wireless communications, and advanced computer, internet, and software-related innovations have transformed the way we live and how we connect with one... 306 Words | 2 Pages
  • Chemistry Lab - 1048 Words Identification of a Copper Compound by Percent Mass Unknown Compound: #9 Abstract: The objective of this experiment was to identify the unknown pure copper salt compound of #9. To do this, the mass of copper in the unknown was calculated and then divided by the mass of the whole compound to get the percent copper. The molecular weight was also calculated by dividing mass of copper compound used by moles of compound in unknown sample. The percent copper averaged out to 31.6% while the... 1,048 Words | 5 Pages
  • Chemistry Cousework - 616 Words Chemistry Coursework – Titration Background Science A titration is the neutralisation of an acid or an alkali. To achieve this, one must be added to the other in a specific amount, strength and concentration. A substance is neutral when its pH is 7. It is most acidic closer to 0 and is most alkaline closer to 14. 28492453194050 0 7 14... 616 Words | 3 Pages
  • Chemistry and Society - 1061 Words Chemistry and Society Chemistry 110 March 17, 2012 Introduction Chemistry is very important in our lives even though we may not realize that chemistry is everywhere. This paper serves to examine the ways in which chemistry is relevant in everyday life and in society. It will also examine the difference between accuracy and precision and provide examples of when accuracy and precision are crucial in measurements and why society depends on these measurements to be accurate and precise (... 1,061 Words | 3 Pages
  • Chemistry Lab - 293 Words Investigating Chemical Equilibrium (Experiment 19 A) Purpose: 1. to recognize the macroscopic properties of five chemical systems at equilibrium 2. to observe shifts in equilibrium concentrations as stresses are applied to the systems 3. to observe a shift in equilibrium concentrations associated with changes in temperature 4. to explain the observations obtained by applying Le Chatelier’s principle Materials Required: See page 209 Heath Chemistry Laboratory Experiments... 293 Words | 2 Pages

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