The Synthesis of Aspirin Chemistry Standard Level Lab Report Data Collection and Processing and Conclusion and Evaluation Date: December 8th‚ 2011 Purpose: The purpose of this lab was to synthesize aspirin‚ determine the theoretical yield‚ compare the percent yield to the theoretical yield and test the purity of aspirin by adding Iron (III) chloride to the product. Hypothesis: I hypothesize that salicylic acid will react with acetic anhydride to produce acetylsalicylic acid (aspirin)
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chemical-resistant apron. Please review current Material Safety Data Sheets for addi-tional safety‚ handling‚ and disposal information. Procedure: 1. Place the two halves of a Petri dish on the projection stage of an overhead projector. Pour enough sodium sulfate solution into each half of the Petri dish to just cover the bottom of each half dish. 2. Add 2–3 mL of universal indicator to each solution to give each a rich‚ transparent green color. 3. Break a pencil lead in half. Attach the leads
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U‚ and C for the nucleotides guanine‚ adenine‚ uracil and cytosine) that directs synthesis of specific proteins‚ while many viruses encode their genetic information using an RNA genome. Some RNA molecules play an active role within cells by catalyzing biological reactions‚ controlling gene expression‚ or sensing and communicating responses to cellular signals. One of these active processes is protein synthesis‚ a universal function whereby mRNA molecules direct the assembly of proteins on ribosomes
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SYNTHESIS AND CHARACTERIZATION OF POLYANILINE/POLY (P-HYDROXYANILINE)/Fe3O4 MAGNETIC NANOCOMPOSITE M. R. SABOKTAKIN‚ A. M. MAHARRAMOV‚ M. A. RAMAZANOV Baku State University‚ Baku‚ Azarbaijan E-mail: mamed_r50@mail.ru Several composites have been studied for static dissipationand microwave absorbing materials based on polyaniline with metallic oxides. These composites which are conducting polymers have been widely used because of their lower density as well their good environmental stability as in
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* Introduction to Organic Chemistry Understand the basis of drawing organic structures Depicting 3-D structures in 2-D Most organic compounds have a three-dimensional structure. How do we represent structures on our two-dimensional page? For example‚ methane is a tetrahedral molecule: Bonds in the plane of the paper: Bonds coming towards the observer: (out of the page) Bonds going away
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Table of Contents Summary of Case 2 Question 1 3 Question 2 3 Question 3 5 Question 4 6 Question 5 7 Question 6 8 References 10 Summary of Case This is a case study on Wal-Mart in which it emphasizes on the ethical question being practiced by Wal-Mart. It will cover ranging from the affected stakeholders such as customers‚ employees‚ community‚ and suppliers to the stockholders perspectives. The employee experiences the ethical problems of Wal-Mart as they are forced to work
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receptor protein and a number of other proteins needed for lipid synthesis.(3) The second promoter of cholesterol synthesis is the hormone insulin. Insulin promotes dephosphorylation (activation of HMG-CoA reductase) which promotes cholesterol synthesis in which insulin binds to its receptor protein in the liver cell membrane and stimulate irs-1 formation.irs-1 activates HMG-CoA reductase enzyme increasing rate of cholesterol synthesis.(4) FACTORS
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“I’d Rather Smoke than Kiss” A Response to Florence King Nurbatyrov Rauan rauan_147@mail.ru 11521917: ENG102 11 IN: English Composition II Irena Shanahan Summary/Response Essay October 31th‚ 2014 Writer and journalist Florence King tried to show smoking world with eyes of smokers. In her essay she is not afraid to speak her mind. At the beginning of the essay King explains how smoking appeared in her life and how her family concerned smoking from Florence’s childhood. Her mother
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Jenebou Sylla November 30‚ 2014 APUSH Ms.Shaugnessey After the colonies of America advanced and the nation changed‚ some political changes were made as well. Political parties were put in place‚ one was the Federalists and the other was the Jeffersonian Republicans. The parties were used in the presidency of Madison and Jefferson in 1801 to
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ST ANDREW’S JUNIOR COLLEGE JC 2 Preliminary Examination CHEMISTRY 9647/03 Higher 2 13 September 2010 Paper 3 Free Response 2 hours Candidates answer on separate paper. Additional Materials: Answer paper‚ Graph Paper‚ Data Booklet READ THESE INSTRUCTIONS FIRST Write your name and civics group on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use a soft pencil for any diagrams‚ graphs or rough working. Do not use staples‚
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