On the summer of 1939 aged about nine years old lived in París. That summer came aunt’s Ester‚ my mother‚ older sister to visit us from Switzerland‚ with her husband‚ Uncle Samuel and my cousins‚ Aaron and Issac. Lived with my grandparents‚ my mother’s parents‚ my grandfather’s Elijah‚ who all called The Patriarch. My grandmother’s Miriam and we called her Nanou. In the 4th district of Paris‚ one block from the Rue du rosier in the Jewish quarter of Paris; Rue Francs Bourgeois it’s located our
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mixture of a and b. A mixture of the major product a with the minor product b. A mixture of the major product b with the minor product a. 10. Consider the SN2 reaction of butyl bromide with OH- ion. Assuming no other changes‚ what effect on the rate would result from simultaneously doubling the concentrations of both butyl bromide and OH- ion? CH3CH2CH2CH2Br + OH- CH3CH2CH2CH2OH +
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shown in figure 1. Figure 1: Structure of Cocaine (ChemWiki) All of the synthetic drugs that derived from the structure of cocaine had similar functional groups including an aromatic ring at one end‚ which is typically an ester of an
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SINGAPORE POLYTECHNIC SCHOOL OF CHEMICAL AND LIFE SCIENCES Diploma in Applied Chemistry with Pharmaceutical Science Organic Chemistry (CP4120/CP4502) Project Preparation and Recrystallisation of Aspirin. AY2010/2011 Name: XXXX Class: DACP 1B/02 Admin no.: P1234567 Table of Contents Page List of illustration
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------------------------------------------------- Liquid–liquid extraction From Wikipedia‚ the free encyclopedia Liquid–liquid extraction also known as solvent extraction and partitioning‚ is a method to separate compounds based on their relative solubilities in two different immiscible liquids‚ usually water and an organic solvent. It is an extraction of a substance from one liquid into another liquid phase. Liquid–liquid extraction is a basic technique in chemical laboratories‚ where it is performed
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Name: Professor`s name: Course number: Date: Metabolic Pathways of Drugs The principal site for drug metabolism in the human body is the liver organ. The process of metabolism usually inactivates drugs though some drug metabolites are pharmacologically in active status. Inactive substance which has a metabolite that is active is referred to as a prodrug. Drugs are metabolized
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The Open Mineral Processing Journal‚ 2011‚ 4‚ 25-44 25 Open Access Flotation Frothers: Review of Their Classifications‚ Properties and Preparation Hamid Khoshdast* and Abbas Sam Department of Mining Engineering‚ Faculty of Engineering‚ Shahid Bahonar University‚ 76169133‚ Kerman‚ Iran Abstract: The importance of frothers in flotation is widely acknowledged‚ particularly in terms of their role with respect to bubble size‚ and the stability and mobility of the froth phase. These factors
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carbonyl carbon leading to the formation of a new carbonyl compound. In this experiment‚ the specific nucleophilic acyl substitution is esterification. It occurs when a carboxylic acid in salicylic acid and an alcohol combine in a reaction to produce an ester. Figure 11.4. Mechanisms on the formation of aspirin Phosphoric acid protonates the carbonyl oxygen atom (C=O) of the anhydride to make it more prone to nucleophilic attacks. It gives the anhydride a positive charge thus‚ making it more susceptible
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Wh Mia Foust Mr. Dunlap Honor Chemistry‚ Per 7 December 21‚ 2010 Glow Sticks Since glow sticks have been invented‚ consumers have wondered how scientists are able to create these magical sticks of light. They work without producing heat. They don’t need a battery or a bulb‚ Magic? This “cool” light is called luminescence. Unlike incandescence‚ which is light from heat energy‚ luminescence can be emitted at normal or lower temperatures. There are several
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lipid‚ neutral lipid and polar lipid. Then using a square chromatoplate the lipid was subjected to a two-dimensional thin layer chromatography to separate the lipid into different components. Theoretically the egg yolk should contain TAGs‚ cholesterol ester‚ cholesterol‚ free fatty acids and polar lipids. In the end of the experiment the chromatoplate should show the polarity of the spots based on the adsorption of the spots in the mobile phase of the two-dimensional thin layer chromatography. Proper
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