acidification of salicylic acid and acetic anhydride. The objective was to convert a specific amount of salicylic acid into the same amount of aspirin that was high in purity. Furthermore‚ the other objectives were to enable students to conduct the synthesis of aspirin‚ reinforce skills or recrystallisation and the technique of melting point determination. The amount of each compound should be the same because there is a 1:1 ratio between them. The purity of the synthesized aspirin was measured by determining
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People have these romantic notions that the medieval time period was full of knights in shining armor and fairytale princesses‚ when in all reality‚ the medieval time period was a bloodthirsty and violent time period. Government and religious officials used sadistic torture to punish suspects and obtain confessions. Torture is the deliberate and cruel infliction of mental and physical suffering to obtain information or for any other reason. ”The oldest and strongest emotion of mankind is fear” (
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Sarah Khan Bivins-5th April 20th‚ 2013 Protein Synthesis Every day‚ you take in an abundance of different biomolecules; one of them being proteins. Have you ever wondered how proteins are made? They don’t just grow from a tree or fall from the sky‚ they are made through a process called protein synthesis. Protein synthesis is broken up in two two steps: transcription and translation. Transcription starts inside the nucleus when the DNA is unzipped by helicase. Following that‚ the mRNA nucleotides
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Medieval and Renaissance Period During the Middle Ages musicians only worked for courts‚ towns‚ and churches. With that churches and cathedrals seemed to be the center of the musical lifestyle and education. Unlike today women were not permitted to sing in church‚ but they could make music in monasteries‚ where they also received musical training. Music in the society of the medieval ages instrumental music was less important than vocal music. The mood and emotional expression of the middle ages
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Cited: Page Carr‚ Karen. "Medieval Cathedrals - History for Kids." Kidipe - History for Kids. N.p.‚ n.d. Web. 6 Jan 2011. . "Cathedrals : : The Middle Ages." The Middle Ages.net. N.p.‚ n.d. Web. 6 Jan 2011. . "Medieval Gothic Cathedrals." Medieval Spell. N.p.‚ n.d. Web. 6 Jan 2011. . Trueman‚ Chris. "Medieval Cathedrals." History Learning Site. N.p.‚ n.d. Web. 6 Jan 2011. .
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Sucrose Synthesis by D. DeWitt‚ PhD v1.5 11/10/12 Introduction | Condensation Reaction | Plant Synthesis | A. Introduction Although it might seem straight forward‚ the synthesis of sucrose‚ either as a simple condensation reaction (a.k.a. dehydration synthesis)‚ or what actually happens in plants is complicated. Before we explore sucrose’s creation‚ let’s take a look at its structure. In Figure 1‚ the space-filling model is pretty but rather useless at this point in our journey. We
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Synthesis of Aspirin Name: Xuanyi Li Teaching assistant: Deirdre Zwilling November 15‚ 2009 Purpose: To synthesize aspirin‚ a common analgesic drug‚ via nucleophilic acid-catalyzed substitution reaction of salicyclic acid with acetic anhydride. The whole reaction is catalyzed by phosphoric acid. (The experiment involved three parts: The synthesis of aspirin‚ the isolation and purification of aspirin‚ and the estimation of the purity of the final product.) [pic] Procedure[1]: A mixture
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Synthesis of Aspirin Learning Goals 1. To synthesize aspirin from salicylic acid and acetic anhydride. 2. To purify the crude product by Recrystallization. Introduction Most drugs are chemical compounds which are described as "organic compounds" because they are comprised primarily of the elements carbon‚ hydrogen and oxygen. The present experiment will be the synthesis of a familiar organic compound called aspirin. The common chemical name is acetylsalicylic acid. Aspirin‚ the
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privileged enough to have soap and bathrooms‚ and even a dentist. There has been major advancements in hygiene since the Medieval Times. After the Black Death‚ Medieval people started looking for a link between hygiene and health. Before that‚ their general hygiene was so awful everywhere you went the smell was repulsive. Sadly‚ Old Spice and Secret were not around years ago. People of Medieval times had no choice but to come up with something else. Nosegays‚
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Jeana Greaves Chem3301-112 June 19‚ 2013 Synthesis of Aspirin from Methyl Salicylate Introduction The synthesis of Aspirin (Acetyl Salicyclic Acid) began with methyl salicylate and sodium hydroxide as the reagent. The polar oxygen accepts the electrons from now positively charged hydrogen. The positively charged sodium disassociates leaving the hydroxide ion with a negative Scheme 1 shows the mechanisms that were demonstrated during the synthesis of Aspirin. charge that attracts to the positively
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