CHEMISTRY 221 LABORATORY�QUANTITATIVE ANALYSIS EXPERIMENT: DETERMINATION OF ASCORBIC ACID IN VITAMIN C TABLETS THEORY: Ascorbic acid‚ C6H8O6‚ MM = 176.13‚ can be oxidized to form dehydroascorbic acid by bromine via the following reaction: The bromine or iodine used in the titration is generated by adding an excess amount of KBr or KI to an acidified solution of the sample according to the following reaction: BrO3- + 5 Br- + 6 H+ 3 Br2 + 3 H2O IO3- + 5 I- + 6 H+
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Organic compounds are very important to a body. They are help the body to do things and replenish it. The 4 organic compounds I will talk about are carbohydrates‚ lipids‚ proteins and nucleic acids. I will explain what they do and what they are made of. Carbohydrates are in foods‚ some examples are sugars and starch. The structure of a carb is ring shaped‚ it is an easy one to know. The monomer of a carb is monosaccharide‚ which means one sugar. A monosaccharide consists of glucose‚ fructose and
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EssoyW riting for EnglishT ests Gobi Duigu @ Gabi Duigu 2002 All rights reserved Reviseda nd reprinted2 003 Publishedb y AcademicE nglishP ress 9/13 Armstrong Street Cammeray NS\f 2062 Australia Ph:029437 6330 email: g.duigu@unswed. u.au Distributedb y: Melting Pot Press 10 Grafton Street ChippendaleN S\W2 008 Australia Ph: (61) 29212 1882 Fax: 02 9211 1868 email:b ooks@eclto. rn.au ISBN: 0-9578996-1-0 lntroduction Stoge I The Question L Understondinthge Question . . . .3
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experience connect to his short story‚ "Sonny’s Blues"? The writer was a poor boy growing up. He was also a Negro‚ so things were bad for him and his family in white America. He probably felt sad every day of his childhood so he turned to books for entertainment and maybe escape. When he started reading‚ he found that he liked it and wanted to create stories for other people to enjoy‚ but he was a poor Negro boy who could not expect help from the whites‚ so he taught himself to write. That is similar
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Research Question: How the amount of vitamin C in fruit juices affects its freshness and till what extent is the information provided on the pack by manufacturers is reliable? Background Information: Hypothesis: -fresh juices have more vitamin C than long-life -juice that is ‘not from concentrate’ is best in terms of vitamin content -if heat destroys vitamin C then heat-treated long-life juices will have lower concentrations -if heat destroys vitamin C then boiled fruit juice will have lower
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“If you worried about falling off a bike‚ you’d never get on” Lance Armstrong When I was younger a very interesting thought never registered in my head and that was‚ “If you worried about falling off the bike‚ you’d never get on” (Armstrong). I was eleven years old and it was the summer of 2007. I was ending school and preparing to begin summer camp for the first time in New York. I would regularly ride my bike unjaded around my neighborhood. Certainly‚ I felt like a professional and as summer was
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I. Intro A- Lance Armstrong B- Background 1) By the age of 16 Lance Armstrong was already a professional athlete. 2) During the time when Lance was diagnosed with cancer Lance created the Lance Armstrong Foundation. 3) Lance Armstrong became the national rookie of the year at the age of 16. 4) Instead of attacking Lance’s brain tumors with radiation‚ which can affect the sense of balance‚ he chose to undergo surgery. C- Lance Armstrong should be inducted into the Hall of Fame because of his
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’Out of the Blue’ is a dramatic monologue spoken by one of the people inside the twin towers on 9/11‚ from inside the burning building. The effect is of extreme close up on a tiny point in space in time‚ almost in a 1to1 narrative time. The event is narrated as it happens an appeal to a second person who could not be listening. This creates an weird effect‚ of an event we cannot touch‚ of lost people who could not speak to us‚ even though we watched at the time or later: the flames‚ the people who
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Questions Google Search C++ Interview Questions C# Interview Questions C Interview Questions .........More pub-7003540323 ISO-8859-1 active GALT:#008000;G C ++ Aptitude Questions C Aptitude Questions 2 .........More 3422992112 ISO-8859-1 Aptitude Interview Questions 1 en Bottom of Form Tutorials C Tutorial C++ Tutorial C Aptitude Questions and Answers .........More Programming Source Codes C/C++ Source Codes C# Source Codes .........More
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Blue Nile Inc.; Case Analyst Blue Nile was founded in 1999 and today‚ it is one of the largest online retailers of diamonds. In addition to selling diamonds‚ it also offers platinum‚ gold‚ peral‚ and sterling silver jewelry. It is headquartered in Seattle‚ Washington and it operates in 25 countries‚ offering products through its United States‚ Canada and the United Kingdom Websites. The Company is public traded on the NASDAQ stock exchange and has received several rewards for its service price
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