because 2+1 integration was overlapping). The multiplicities of all signal clusters of H1 spectrum helped in determining the structure of compound. The signal at 4.9 indicates that the alkane group must be attached with electronegative compound that shifted alkane group by “2”‚ and the signal at 2 indicate the alkane group must be attached with carbonyl group. Thus‚ all the information collected from NMR suggested that the product of fisher esterification was (1‚3-dimthylbutyl) acetate. A number
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There are many unexplainable things that happen to man different people in this world and now they have explanations. Miscarriages are accruing more and more often these days. There are many logical reasons for the occurrences of miscarriages. There has been a great deal of research concerning miscarriages and now we came prevent these from happening. Doctors have discovered that caffeine plays a big part in miscarriages today. Smoking also is a leading cause of miscarriages in today’s studies. Studies
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water would be another challenge. 8. Is the water treated prior to its discharge? If so‚ with what? Sodium hypochlorite (bleach solution) is used to kill remaning organisms in the water grom the final settling tanks. The second stage is water DE chlorination‚ this is where chemical (sodium bisulfite) is used to neutralize the bleach prior to the clean water discharge. 9. Where is the treatment water discharged? Potomac River 10. Who monitors the discharge of treated effluent to ensure that it meets
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H B621/02 GENERAL CERTIFICATE OF SECONDARY EDUCATION GATEWAY SCIENCE SCIENCE B UNIT 1: Modules B1 C1 P1 (Higher Tier) TUESDAY 15 JANUARY 2008 Afternoon Time: 1 hour *CUP/T45720* Candidates answer on the question paper. Additional materials (enclosed): None Calculators may be used. Additional materials: Pencil Ruler (cm/mm) INSTRUCTIONS TO CANDIDATES • • • • • • • Write your name in capital letters‚ your Centre Number and Candidate Number in the boxes above. Use blue or black ink. Pencil may
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Student Number Mark / 100 2011 TRIAL HSC EXAMINATION Chemistry General Instructions • • • • • • • Reading time – 5 minutes Working time – 3 hours Write using black or blue pen Draw diagrams using pencil Board-approved calculators may be used A data sheet and a Periodic Table are provided. Write your Student Number at the top of this page and those of pages 10 and 11. Total Marks – 100 Section I Pages 2 – 24 Confidential Keep Secure 75 marks This section has two parts‚ Part
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Expt. 8.1 Thin Layer Chromatography (TLC) Analysis of Analgesics Krista Jinks CH 211L Section F 10/27/14 I. Abstract: The objective of this experiment was to analyze analgesic tablets by TLC to determine what analgesics they contain. The analgesics that could be in the tablets included ibuprofen‚ acetaminophen‚ aspirin‚ and caffeine. Through the use of TLC‚ unknown substance #62 was found to be Bayer Aspirin because it only contained aspirin. II. Introduction: 1. Briefly describe
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The Diels-Alder Reaction of Anthracene with Maleic Anhydride 1 The Diels-Alder Reaction of Anthracene with Maleic Anhydride Microscale Diels-Alder Reaction Leah Monroe March 6‚ 2003 Organic Chemistry Lab II Experiment performed on February 25 and 27‚ 2003 Abstract: This experiment involved a reaction between anthracene and maleic anhydride via a Diels Alder reaction to yield 9‚ 10-dihydroanthracene-9‚10-α‚ β-succinic anhydride. Anthracene was the diene and maleic anhydride was the
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Comparison of the rate of reaction and yield of glycerol in saponification with different triglycerides Chemistry EE Candidate number: 0019 Word count: 3974 TABLE OF CONTENTS CONTENTS 2 INTRODUCTION 2 RESEARCH QUESTION 5 BACKGROUND INFORMATION 5 METHODOLOGY 10 DATA PRESENTATION AND PROCESSING 13 CONCLUSION 24 EVALUATION 24 BIBLIOGRAPHY 26 Introduction In 1779‚ Carl W. Scheele‚ a Swedish chemist‚ discovered a new transparent‚ syrupy liquid by heating olive oil and litharge . This
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Amines and Amides Amine - an ammonia molecule (NH3) in which one or more H atoms are substituted by an alkyl or aromatic group. Amide - an organic compound with a carbonyl functional group (C=O) bonded to a nitrogen atom. Amines are the smaller and simpler products of the decomposition of larger and more complex organic compounds like proteins. They often have foul odours‚ as do many nitrogen compounds‚ such as the smell of rotting fish and decomposing animal tissue and are produced by
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of potential causes for smelly water‚ and the following are some of the most common. Chlorine Almost everyone is familiar with the bleach aroma of chlorine in the water. It may appear stronger at times‚ and this is typically due to excessive chlorination in public water sources. Chlorine is used by water treatment facilities for water disinfection and treatment. A Benjamin Franklin plumber in Arlington can provide the solution for chlorinated water with water filtration‚ eliminating not only the
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