EXPERIMENT 5 - Preparation of Acetanilide Preparation and purification of Acetanilide [pic] Purpose: a) To synthesis acetanilide by reaction of aniline and acetic anhydride. b) To purify acetanilide by crystallization method from water c) Purity check by melting range Equipment / Materials and Hazars: hot plate beakers(150‚250mL) ice stirring rod spatula Büchner
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Hicks 1 August 16‚ 2012 Can we decrease homelessness? The essay “A Modest Proposal” by Jonathan Swift is a brutal satire in which he suggests that the poor families should kill their young children and eat them in order to eliminate the growing number of starving citizens. At this time there was extreme poverty and a wide gap between the poor and the rich‚ the tenements and the landlords. Throughout the essay Swift uses satire and irony as a way to attack the indifference between classes
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solid silver. By weighing the reactants before the reaction‚ the mass of silver produced can be predicted. This theoretical yield can be compared to the actual yield of silver. Purpose Students will compare the theoretical mass of silver with the actual mass of silver from the single replacement reaction between copper and silver nitrate. Materials Copper wire stirring rod 18 x 150 mm test tube silver nitrate‚ AgNO3 50 mL graduated cylinder distilled water 100 mL or 250 mL beaker
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their Properties Experiment Number 2 Date: Dec. 6‚ 2010 Objective: To determine the properties of colloids and how they function in physiological systems Materials: O.1 M CuSO4 * 10% skim milk mixture 3 M HAc 0.2 M K2Cr2O7 0.04 M AgNO3 0.02 M K2Cr2O7 * 1% Gelatin 0.01 M AgNO3 5 Test tubes Dialysis bag Observations: Part I. |Test Tube Number |CuSO4 Solution |Skim Milk |3
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have my own. I am a person who is far from over weight and I know how I eat and maintain myself and I can afford to. I can’t imagine it’s easy for someone who doesn’t have the fast metabolism that I have. Reading the article “Why We Hate Fat People” by: J. Eric Oliver‚ I can understand both sides. Although obesity is currently a hot topic among policy movers‚ it is certainly not a new issue and has been a topic of concern since the early 1950s‚ with U.S. government agencies and health organizations
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Abstract: The main reason for this experiment is to prepare a simple soap made from vegetable oil. The physical properties will be tested in order to demonstrate the reactions that occur. The experiment can conclude that the vegetable oil had a primary fatty acid called linoleic acid‚ which was evident during the saponification reaction. The simple soap did appear to be a good emulsifier because the soap did dissolve in the mixture of mineral oil and water. In hard water the calcium and magnesium
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Fat Chance for the “Fat Tax” Our bodies and what we put into them is our own business unless someone else is harmed in the process. I can understand a tax on drinkers and smokers because drinkers can harm others when they get behind the wheel of a car‚ and secondhand smoke is a killer of many‚ but a tax on what people eat is preposterous. People are still going to eat junk food no matter what the cost is; look at smoking‚ the price of cigarettes keeps going up but people continue to buy them
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2-7-1 Column of Air Resonance and the Velocity of Sound This activity uses the resonance of a column of air to measure the velocity of sound. English Activity: Setup í Equipment Glass Resonance Tube (Uniform Inside Diameter‚ With Scale Markings) Rubber Tube Reservoir Stand Low Frequency Generator (or Tuning Fork) Audio Measurement Setup (EA-200‚ graphic scientific calculator‚ data communication cable) Temperature Measurement Setup (EA-200‚ graphic scientific calculator‚ data communication
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| 1. List the pH levels you recorded for each test tube. Answer: |Test Tube |pH Level | |1 | | |2 | | |3 | | |4 | | |5 | | (5 points) |Score | | | 2
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Can we save the Polar bears? Imagine that you are a child waking up on crisp cool morning in a small village on the outskirts of Alaska. You stretch‚ throw on some clothes and go running outside. It’s summer‚ the days are long‚ and you have a lot planned. You are what is considered a local‚ you were born in Alaska‚ so were your parents and their parents. One of your favorite things to do is hunt Polar bears. You are used to the cold temperatures‚ the ice and the snow. Then one day in your early
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