Experiment 2 and 3: Synthesis of Aspirin and Determination of Melting Point A. Abstract Aspirin is the common name for the compound acetylsalicylic acid‚ widely used as a fever reducer and as a pain killer. The first part of the experiment aims to synthesize aspirin from the reaction of salicylic acid with acetic anhydride with the aid of phosphoric acid as a catalyst. The second part of the experiment aims to assess the purity of aspirin through the determination of its melting point and
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Amy Tan’s “Two Kinds” In “Two Kinds” Amy Tan uses a wide range of techniques and literary elements to demonstrate the true meaning behind the story. She incorporates similes and imagery to intertwine her story. “Two Kinds” is the last story in the second of four sections of Amy Tan’s immensely successful first book‚ The Joy Luck Club. The story is concerned with the complex relationships between mothers and daughters. Amy Tan tells the story‚ from the point of view of an adult looking back on
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Nikolai Friedman Oct.5th‚2015 Oral communications Amy Cuddy Response David Cameron is an Ass Amy Cuddy is a social scientist and like many experts in their field has given a TED talk on the subject of her main work. In this TED talk she explores how our body language greatly affects who we become. Cuddy also shows how snubbing a handshake from your personal security after a visiting president shakes said guard’s hand‚ makes U.K Prime Minister David Cameron look like an ass. This 20 minute TED
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Synthesis of DEET Abstract: For this experiment m-toluic acid was reacted with thionyl chloride resulting in a nucleophilic acyl substitution which could then be used to create DEET with excess diethyl amine (Figure 1). This was done by adding diethyl amine drop wise using a seperatory funnel which resulted in a gas formation which was controlled with a condenser attached to a gas vacuum. The resulting mixture was then washed to remove excess acids and bases and rotovapped. DEET was synthesized
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Experiment 23: Synthesis of an Alkene April 5‚ 2013 Purpose: Results and Discussion The weight of our n-Butyl Bromide sample (actual yield) was 0.09g. The percent yield was found to be 4.38%. Only 0.09g of the theoretical 2.055g yield was obtained. The boiling point was 104° C‚ which is higher than the literature value of 101° C. This is due to the sample being somewhat impure‚ as impurities tend to increase boiling point. When IR spectroscopy was performed‚ there were no OH stretches
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Culture is considered a part of life which will never leave a person no matter where they eventually end up. In the stories: “Two kinds” by Amy Tan‚ “Fiesta 1980” by Junot Diaz‚ and “A Thousand Years of Good Prayers” by Yiyan Li it shows the family’s internal struggles as they build a new life in America. The stories show how many immigrant families hold onto the customs of their old way of life and expect their kids to grow up as they had in their old culture. As many immigrants leave their cultures
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replication in a eukaryotic cell is more difficult. DNA of an eukaryotic cell is in chromatin form to fit into the small nucleus for the replication to occur‚ first the DNA should open. This is because it is harder for eukaryotes to carry out DNA synthesis. Replication of DNA in a prokaryote is different from a eukaryote. In a prokaryote they have a single origin where the replication process starts. Also eukaryotes synthesize the same time they are being transcribed‚ and ribosomes will be active
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In Amy Tan’s The Joy Luck Club‚ from “Two Kinds” and in Bissinger’s Friday Night Lights‚ the outcome of parents expectations of their children is perfectly portrayed. When a child is pressured to live up to their parents expectations‚ they become stressed. In most cases‚ this leads to failure because the child feels as if they will never be able to please the parent. In other cases it leads to the child cracking under pressure and being too anxious to complete the task at hand‚ or the child might
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Synthesis of Cyclohexanol Author: Ahmed Ayyash 06/06/13 Introduction: In this experiment‚ cyclohexanol was prepared from an initial cyclohexene. However‚ this occurred over a number of steps‚ these are out lined below. 1. Cyclohexene + aqueous acid cyclohexyl cation 2. cyclohexyl cation + hydrogen sulphate + water protonated cyclohexanol + cyclohexyl hydrogen sulphate 3. cyclohexyl hydrogen sulphate protonated cyclohexanol + HSO4 4. protonated cyclohexanol + HSO4
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Anthony Felix 10/27/11 Che12ALR Synthesis of Diphenylacetylene Observation of Results: 1‚2-dibromo-1‚2-diphenylethane | 0.204g | Diphenylacetylene | 0.087g | Theoretical yield | 0.107g | Percent yield | 81.3% | Melting point range of diphenylacetylene | 57- 60°C | Average melting point | 58.5°C | Average literature melting point | 60.0°C | Percent error of melting point | 2.5% | Calculations: Theoretical yield: Limiting reagent (LR) x M.W. (LR) x Mole to Mole ratio x M.W. (product)
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