Purity of Aspirin Objectives - To research‚ using various sources‚ the history of aspirin‚ its use in medicine‚ methods of synthesizing it and of measuring its purity - To compare the % purity of a branded aspirin tablet with a generic aspirin tablet - To compare 2 methods of composition analysis of the two types of aspirin Research
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General ColleGe Chemistry LabPaq / Published by: Hands-On Labs‚ Inc. sales@HOLscience.com / www.HOLscience.com / Toll Free 866.206.0773 a laboratory manual of small-scale experiments for the independent study of General College Chemistry 50-0125-CK-01 LabPaq® is a registered trademark of Hands-On Labs‚ Inc. (HOL). The LabPaq referenced in this manual is produced by Hands-On Labs‚ Inc. which holds and reserves all copyrights on experiences. The laboratory manual included with a LabPaq
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LABORATORY 3: LABORATORY 3: Basic Chemistry for Investigating Living Systems Abstract The purpose of this experiment was to explain how colorimetry can be used to qualitatively detect cellular chemical components; to chemically differentiate between proteins‚ sugars‚ starches‚ and lipids; to identify the roles of molecular components in living systems; to comprehend the value of using a systematic approach to research; and to describe why hypotheses‚ controls‚ standards‚ and quality control
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Determination of Formation Constant‚ Kf of Thiocyanoiron(III)‚ FeSCN+2 Dr. Fred Omega Garces Chemistry 201 Miramar College Chemical Equilibrium: Finding the Formation Constant of FeSCN2+ (aq) Fe3 +(aq) iron(III) + SCN–(aq) FeSCN2+(aq) D thiocyanate thiocyanoiron(III) kf = € FeSCN2 + [ ] Fe +3 [SCN− ] [ ] Objective The purpose of this experiment is to determine the constant formation‚ Kf‚ (equilibrium constant) for the formation of thiocyanoiron(III)
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Cited………………………………………………………………………………………………………….9 Word Count: 1.782 Year 12 Chemistry HL DUBAI INTERNATIONAL ACADEMY Aim The aim of this investigation is to determine the formula of the complex ion formed from copper (II) ions and ammonia through colorimetry. Results Raw Data Table 1: The Effect of CuSO4:NH3 Volume Ratio (cm³) (±0.05) on Absorbance (±0.01) Independent Variable: Volume (cm³) (±0.05) CuSO4 NH3 0.00 0.00 1.00 9.00 1.50 8.50 2.00 8.00 2.50 7.50 3.00 7.00 4.00 6.00
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Whereas‚ the problem of KDML105 variety‚ the improvement of the local variety that has good quality and is not sensitive to light is the important target of Rice Improvement Project (Vanavichit et al‚ 2003). This improvement has led to the breeding of a new aromatic rice variety that can grow in irrigated areas with sufficient water for rice growing through the year. There was successful in 1997‚ when the Department of Agriculture certified three other cultivars of aromatic rice‚ namely‚ KlongLuang
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Beer’s Law & Colorimetry Angela Carraway‚ Ph.D. and Peter Jeschofnig‚ Ph.D. Version 42-0140-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing
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uses ranging from coinage to non-ferrous fittings on ships. Many domestic taps use brass where contact with water occurs. You are provided with a sample of brass which is about 150 years old and you are asked to quantitatively analyse it‚ using colorimetry‚ to find the percentage of copper present. Your results will be used to compare the composition of antique brass with modern brass. Task: Finding the Percentage of Copper in a Brass Alloy The
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reaction also makes small amounts of toxic sulphur dioxide gas. You will choose one factor and investigate this factor’s effect on the rate of reaction between sodium thiosulfate and dilute hydrochloric acid. A colorimeter is a device used in colorimetry that generally refers to the device that measures the absorbance of particular wavelengths of light by a specific solution. The output from a colorimeter can be shown by an analogue or digital meter and may be shown as transmittance (a linear scale
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Colorimetric Determination of pH Almira‚ Faerie Carleen Lucile L. Gallardo‚ Charlotte O. Group #6‚ Chemistry 18.1‚ MHEG1‚ Ma’am Arlou Angeles September 23‚ 2013 I. Abstract The acidity of the four unknown solutions were determined with the use of colorimetry using McIlvaine’s buffer solutions varying in proportion of its constituents (disodium phosphate and citric acid). These buffer solutions were subjected to the addition of corresponding pH indicators and the variation of colors depending on its
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