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) purity
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DEDICATION…………………………………………………………..ii ACKNOWLEDGEMENT……………………………………….……..iii TABLE OF CONTENTS……………………………………………….V LIST OF TABLES…………………………………………………….Vii ABSTRACT…………………………………………………………….ix CHAPTER ONE 1.1 BACKGROUND OF STUDY ……………………….….……..…1 1.2 STATEMENT OF RESEARCH PROBLEM…………………..…3 1.3 SIGNIFICANCE OF THE STUDY……………………..…..…….6 1.4 OBJECTIVE OF THE STUDY……………………………………7 1.5 HYPOTHESES……………………………………………………7 1.6 STUDY AREA ………………………………………….………...8 1.7 LOCATION………………………………………………….. ….10
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Comparison between Organic and Inorganic Compounds Organic Compounds | Inorganic Compounds | *Organic Compounds are composed of few elements only.C‚ H‚O‚N‚S‚P and halogens are the most common. | * Inorganic Compounds are composed of all the known elements. | *They are generally found in living matter‚ i.e.‚ animals and plants. | *They are generally obtained from non-living matter‚ i.e.‚ minerals. | *They are usually gases‚ liquids or solids having low melting points. | *They are usually solids
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Lab #4 The Synthesis of Organic Polymers CHM2123‚ Section C October 21‚ 2014 Introduction: Organic polymers are macromolecules that are composed of smaller molecules called monomers. There are two main groups of polymers: natural polymers and unnatural (synthetic) polymers. Natural polymers include proteins such as cellulose and starch and are a necessity for our existence. On the other hand‚ synthetic polymers such as the polycarbonate in our lab goggles
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flavors‚ molecules‚ caffeine‚ etc. are extracted from the coffee beans. In this experiment‚ a solution was extracted containing a known amount of benzoic acid in water with methylene chloride‚ an organic solvent. The amount of leftover acid was determined through the titration of the aqueous‚ not the organic‚ solution with basic NaOH. This allowed the student to calculate and determine the Kd value of both multiple and single extractions. The efficiencies of both single and multiple extractions were
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sample would be 5000 rpm because there are only two layers so the soil is more separate in that speed. Describe in which layers you are likely to find the organic matter‚ gravel‚ sand‚ silt‚ and clay at the following speeds: 5000 rpm 15000 rpm The layer you are likely to find the organic matter‚ gravel‚ sand‚ silt‚ and clay is 15000 rpm because there are five layers so you will find
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layer with litmus paper after removing the sodium bicarbonate layer. If the paper shows that the extracted layer is neutral‚ what assumption can you make about the contents of tube 1? 5. Using Schemes 1 and 2 in your handout as references‚ fill in the
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comman structure based on legitimate authority‚ or routinization of job duties (Burns &Stalker 1961)(Weber 1947). Informality play a role in organizations in which degree of innovation‚ interpersonal cohesion and role flexibility are expected. Organic organizations are defined relative to a set of structural arrangements: low degree of formalization‚ significant lacteal communication‚ decentralization of decision making. The importance of organizations in modern economy and development of new
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BIO 120 General Biology I Note-taking/Study Guide Chemistry What is chemistry? Define energy Define potential energy and give an example Define kinetic energy and give an example Define matter Describe the three states of matter? Define elements Define atoms What are the three subatomic particles? What are their charges? Where are they found in the atoms? Define atomic number. Use the periodic table to determine the atomic number of various elements. Define mass number. Use the periodic table
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special occasions like independence day. The excitement produced by fireworks like ‚ brightening the night sky and plunging it with vivid displays of colour and insignificant‚ which makes them a crowd pleaser. Behind all the excitement of fireworks‚ chemistry plays an important role in creating the vivid colours we witness lighting up the sky. The actual chemical reactions that take place in the explosions require the use of oxidisers‚ reducing agents and binders. The additions of varying metal chlorides
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