| |2262 |C≡N | |1744 |Ester carbonyl | |1460 |C-H | |1145
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Determination of the heat of Combustion of Biodiesel Using Bomb Calorimetry Abstract: In this experiment‚ biodiesel fuel was synthesized from vegetable oil. Biodiesel is considered “green” and better for the environment because it is biodegradable. The heat of combustion was then determined using a bomb calorimeter. Introduction: Petroleum is the largest single source of energy consumed by the world’s population‚ exceeding coal‚ natural gas‚ nuclear‚ hydro‚ and renewables (3). It is predicted that
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Synthesis and Purification of Acetylsalicylic Acid (ASA or Aspirin) Background Salicylic acid is a phenol as well as a carboxylic acid. It can therefore undergo two different types of esterification reactions‚ creating an ester either with the hydroxyl or with the acid. In the presence of acetic anhydride‚ acetylsalicylic acid (aspirin or ASA) is formed. Correspondingly‚ an excess of methanol will form methyl salicylate‚ which is also an analgesic. In this experiment‚ we shall use
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of esterified fatty acids. Consequently‚ TAG composition is very complex. Along with TAG‚ the lipid composition of sheep milk presents other simple lipids (diacylglycerols‚ monoacylglycerols‚ cholesterol esters)‚ complex lipids (phospholipids) and liposoluble compounds (sterols‚ cholesterol esters‚ hydrocarbons) (Park‚ 2006; and Haenlei and Wendorff‚ 2006). The relative amount of protein and energy that is found in the rumen of an ewe at any given time is the major factor affecting rumen fermentation
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Pitch Perfect is a 2012 American musical comedy film directed by Jason Moore. The screenplay was written by Kay Cannon. The musical comedy features an ensemble cast consisting of Anna Kendrick‚ Skylar Astin‚ Rebel Wilson‚ Anna Camp‚ Brittany Snow‚ Ester Dean‚ Alexis Knapp‚ Hana Mae Lee‚ Ben Platt‚ Adam DeVine‚ with John Michael Higgins‚ and Elizabeth Banks. The plot follows an all-girl college a cappella group‚ The Barden Bellas‚ as they compete against another a cappella group from their college
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Ester Appelgren CONVERGENCE AND DIVERGENCE IN MEDIA: DIFFERENT PERSPECTIVES ESTER APPELGREN Media Technology and Graphic Arts‚ NADA‚ The Royal Institute of Technology (KTH)‚ Lindstedtsvägen 5‚ 100 44 Stockholm‚ Sweden ester@kth.se A current issue in the media industry is coping with the effects of convergence. The concept of convergence is frequently used both in the academic field and within the media industry to denote the ongoing restructuring of media companies as well as to describe
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Centre Number Surname Other Names Candidate Signature Candidate Number For Examiner’s Use Examiner’s Initials Question Mark General Certificate of Education Advanced Level Examination January 2011 1 2 3 Chemistry Unit 4 Kinetics‚ Equilibria and Organic Chemistry 9.00 am to 10.45 am Wednesday 26 January 2011 CHEM4 4 5 6 7 For this paper you must have: ● the Periodic Table/Data Sheet‚ provided as an insert (enclosed) ● a calculator. TOTAL Time allowed ● 1 hour
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Part 1. Hydrocarbon Nomenclature From International Union of Pure and Applied Chemistry (IUPAC) General Form of IUPAC Nomenclature [branching substituent(s)] Root [Suffix] Rules: 1. Identify the longest continuous chain of carbon atoms. This chain determines the parent name (root) of the alkane. The parent suffix for alkanes is‚ not surprisingly‚ -ane. For chains of equal length‚ pick the one with the most substituents. (Note: I number all possibilities going from left to right
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I found out that we have to use oil of wintergreen instead of Phenol as it is harmful and a lot more expensive as it is used in industry‚ the oil of wintergreen is a safer option to use in school and it is also part reacted meaning it already has esters attached so therefor was less risk for use to use it compared to Phenol. There were a lot of risks when performing these tests and so we had to take great precaution and stick by our risk assessments. Also a few things went wrong as well. After we
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The Behavior of Proteins: Enzymes Enzymes are Effective Biological Catalyst Catalysis- speeds up metabolism to allow production of products. Enzymes- Highly specific and most efficient catalyst that speeds up metabolism or rate of reaction in organisms by factor up to 10^20 (globular proteins) Nonenzymatic catalyst- enhance by 10^2 -10^4 Ribozymes- acts for catalytic activity in RNA’s Kinetics versus Thermodynamics Standard free energy change- difference between the energies of the reactants
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