REACTION?’ SANIA HUSSAIN CANDIDATE NUMBER:5093 Contents The aim – PG 1 Introduction – PG 1 Theories – PG 1‚ 2 Prediction – PG 2‚ 3 Safety – PG 3 Strategy – PG 3‚ 4 Method – PG 5‚ 6‚ 7 Preliminary – PG 7 Actual experiment and graphs – PG 7+ Chemistry coursework Hypothesis/Aims The aim of the investigation is to see how different concentrations of hydrochloric acid affects the rate at which hydrogen gas is produced when it’s reacted with a strip of magnesium
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Science Forensic? • An experimental result has no standing until it is disseminated to the rest of the scientific community – peer-reviewed journal – allows the experiment to be repeated & the results reproduced What makes a Science Forensic? • A product of the scientific community not individuals • Review of forensic experiments – another analyst in the laboratory – an analyst assisting opposing counsel • Review necessary – to catch any clerical errors – establish that conclusions are
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Analysis 1. The null hypothesis for this experiment was that for all plant materials‚ the volume of carbon dioxide produced and the rate of carbon dioxide produced would remain constant and unchanged as the time elapsed. The Alternate hypothesis for this experiment was that sugarcane would be the leading producer 2. came from the fact of sugarcane properties which is composed of simple sugars‚ therefore the yeast being used for fermentation in this experiment would have a faster rate of producing
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electrolytic cell containing 5000 cm3 copper(II) salt solution that is 0.5 molar through which a current of 1.75 amperes is passed? (RAM for Cu = 63.5) (4 marks) PLEASE TURN TO THE NEXT PAGE Page © The University of the West Indies Course Code CHEM 0061 2005/2006/……. _____________________________________________________________________________________________ DO NOT WRITE OR TYPE ON THE BACK OF THIS SHEET: USE ONE SIDE ONLY INSTRUCTIONS: Each page must be signed by the Examiners and where
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derivatives where (S) configuration is predominantly. Finally‚ hydrolysis of the ester then provides (S)-ibuprofen in a relatively high yield. all reaction were monitored by TLC at room temperature with appropriate solvent system which states in experiment section. IR‚ 1H-NMR‚ 13C-NMR‚ polarimetry and melting point range were used to define the product and its purity. Introduction Racemic mixture of ibuprofen is sold in the market‚ however only the (S)-enantiomer is responsible for the desired
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The Distillation of an Unknown Compound INTRODUCTION Distillation is the process heating a liquid to form vapor which is then collected when cooled and separated from the original liquid. The purpose of this experiment was to determine the identity of an unknown substance using simple and fractional distillation. Gas chromatography analysis the components of a mixture by separation of the materials by their different boiling points. EXPERIMENTAL The simple distillation apparatus was assembled
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Morcilla‚ Ma Dame Ametrini T. MT11213 Chem 24 Prof. Zenaida Bacsafra COLLAGEN Collagen is a protein found abundantly throughout the bodies of animals‚ including humans. It is a very variable protein‚ forming the basis of many connective and support tissues. It is a fibrous structural protein‚ with a distinctive structure. In fact‚ collagen makes up about one-third of the total body weight. Its name is derived from the French word for glue. Collagen fibers‚ which resemble microscopic
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a scientific paper becomes a part of creating and validating new knowledge‚ techniques‚ discoveries‚ and inventions. As a student in Chemistry laboratory‚ you will be required to write scientific paper based on the results of your class experiments. This will serve as an important training ground for you as research-proficient scientists‚ medical & allied health science practitioners‚ engineers‚ and educators in the future. The training will include preparation of schematic diagram
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June 26‚ 201 ------------------------------------------------- Abstract In this experiment‚ different statistical concepts; such as Q-test‚ Mean‚ Standard Deviation‚ Range‚ and Confidence interval were used to determine the weight variations in samples. Mass of ten 25-centavo coins was determined using analytical balance‚ treating each as single samples. The values were then divided into two data sets. From this experiment‚ it can be seen that the values from each data set do not vary greatly from each
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Unit 2 PPA 1 Complexometric Determination of Nickel using EDTA Introduction: The Aim of the experiment is to determine the percentage of nickel salt using a complexometric technique. Ethylenediaminetetraacetic acid (EDTA) is a hexadentate ligand which forms stable complexes with most metal ions‚ thus is widely used to determine metals in complexometric titrations. EDTA can be represented as H4Y and in alkaline conditions‚ it exists as Y+ ions: The Y4- ions form 1:1 complexes with metal ions
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