Buoyancy Lab: Archimedes’ Principle TABLE OF CONTENTS CONTENTS …………….………….…………….……………………………..Page No. 1. Abstract…………………………….…………….………….…………….……………….. 3 2. Objective & Introduction ……….……………………………………….………………...4 3. Theory & Experimental Methods ……………………………….………………………...5 4. Results & Discussion …………………………………………………….………….............6 5. Conclusions..…………………………………………………….…………………………..7 6. References.…………………………………………………………………………..………8 7. Appendix ……………………………………………………….……………..………….…9
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Raquel Johnson October 19‚ 2014 Solids: Recrystallization and Melting Points Organic Chemistry 2423 Lab Report: Recrystallization Abstract: The purpose of this lab was to purify an unknown compound by recrystallization. Taking an unknown compound and identifying it by purifying it from its impurities through the use of hot gravity filtration. Then to determine the unknown you were to take the melting point. An unknown compound was recrystallized from hot water to produce 0.99 grams (67% recovery)
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Stoichiometry Lab Stoichiometry is the end result of adding up chemical elements that were involved in chemical reactions (http://dictionary.reference.com/browse/stoichiometry). The word stoichiometry was obtained from two greek words meaning element and measure. This explains the definition for the term. A chemist named Jeremias Benjamin Richter was the chemist responsible for first realizing what stoichiometry was (http://www.chemteam.info/Stoichiometry/What-is-Stoichiometry.html). In 1972
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Department of Chemistry Extraction and Sublimation Experiment #4 10/02/13 Introduction Caffeine is a stimulant found in tea‚ coffee‚ cocoa‚ OTC medication‚ and cola drinks.It stimulates the brain and the central nervous system‚ so that a person feels less tired and more alert. The purpose of this lab is to determine the amount of caffeine in tea. The major component of tea is cellulose which is a polymer of glucose. Materials Lab coat Goggles Graduated cylinder 1 tea bag (1
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Measures of Flexibility and Their Correlations to Sit-and-Reach and Modified Sit-and-Reach Tests Jacob Palmer University of Puget Sound March 3rd‚ 2015 Measures of Flexibility and Their Correlations to Sit-and-Reach and Modified Sit-and-Reach Tests INTRODUCTION Flexibility can be defined as the capability of something to bend easily without breaking. The flexibility of a person is commonly measured during fitness tests‚ and the most frequently used test of a person’s flexibility is the sit-and-reach
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ABSTRACT: This lab allows us to observe the conversion of hydrogen peroxide (H2O2) into water and oxygen gas. An enzyme known as catalase facilitates this decomposition reaction. The catalase enzyme acts as catalysis‚ helping lower the energy needed to activate the reaction while the enzyme itself is not affected. Catalase is a digestive enzyme used to break down hydrogen peroxide‚ which is a normal byproduct of cellular respiration. The reaction could take place without the help of catalase‚ but
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Results: Since the mass of the ball bearing used in this experiment was very light‚ 20 balls were measured and the result was divided by 20 for better accuracy. This procedure was repeated for the sizes and the results are as follows: Diameter (mm) Mass (kg) 2 0.04 3 0.075 4 0.11 To find out the densities of the three balls‚ the following formula was used: Density= (mass of the ball)/(Volume of the ball)= mass/(4/3 π r^3 ) Density of 2mm ball = (0.04⁄1000)/(4/3 π 〖(0.001)〗^3
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Organic Lab Trial 1 Trial 2 Trial 3 Observations We added the 30ml of warm water with 4.7 grams of borax powder in to the cup labeled ‘Borax Solution’ and also added a few dots of green food coloring. We then stirred it until all the solutions were completely mixed. When this happened the borax and water turned into a watery green solution. then we added 15ml of glue in the cup labeled ‘Ball mixture’ and added the mixture we made
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(Staudt 80). In this lab‚ solubility in water‚ acidity‚ and odors of carboxylic acids will be observed. Also‚ esters will be produce and odors will be detected from the product. Finally‚ saponification will be learned. PROCEDURE: Carboxylic Acids and Their Salts: Characteristics of acetic acid: 2mL of water and 10 drops of glacial acetic acid was placed into a clean‚ dry test tube. Before
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you tested. 5. Identify you metal using the list of specific heat values provided. The metal that was identified was Zinc. 6. Calculate the percent error in the specific heat value that you determined experimentally. Conclusion: The purpose of this experiment
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