Propriétés thermiques des matériaux polymères 1-Résumé La température de transition vitreuse (Tg) est probablement la propriété thermique la plus importante des polymères. Elle permet de déterminer la plage de température d’utilisation d’un polymère. On constate en effet‚ une diminution importante du module d’élasticité aux environ de la Tg. La Tg est influencé par plusieurs facteurs. Une faible masse moléculaire‚ des chaînes de polymères plus rigide‚ la présence de gros groupement latéraux
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Name: Tonny‚ Chan Kar Yu‚ Student ID: 10297729 Date of Experiment: 19th March 2005‚ Group: B1 Title: Preparation of 1-bromobutane from 1-butanol by SN2 reaction Objective: 1. To study the preparation of 1-bromobutane from 1-butanol by an SN2 reaction 2. To study the method of purification of an organic compound by simple extraction 3. To study the test of identification of alkyl halide Chemicals and Apparatus: ~18.0 g 1-butanol‚ ~20.0 g sodium bromide‚ 15 ml of concentrated sulfuric acid‚ anhydrous
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.model small .stack 100h .data ch0 db "Corresponding Letter for Color$" ch1 db 0ah‚ 0dh‚"A. Blue$" ch2 db 0ah‚ 0dh‚ "B. Yellow$" ch3 db 0ah‚ 0dh‚ "C. Red$" selection db 0ah‚ 0dh‚ "Enter Chosen Letter of Color: $" void db "Invalid Selection of Choices!$" nam db "ASSEMBLY$" .code start: mov ax‚ @data mov ds‚ ax mov ah‚ 9h lea dx‚ ch0 int 21h lea dx‚ ch1 int 21h lea dx‚ ch2 int 21h lea dx‚ ch3 int 21h lea dx‚ selection int 21h mov ah‚ 1h int 21h mov cl‚ al cmp cl‚ ’a’ je blue cmp cl‚ ’b’
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EXPERIMENT 1 “HOW DO I LOVE THEE LET ME COUNT THE WAYS...” DETERMINATION OF AVOGADRO’S CONSTANT Techniques Calibration drop counting MSDS available for • • stearic acid‚ CH3(CH2)16COOH cyclohexane‚ C6H12 Principles molar volume molecular structures surface areas and volumes Avogadro’s constant percent error Recommended Advanced Reading Chapter 3 in Petrucci‚ Herring‚ Madura‚ & Bissonnette’s General Chemistry‚10th Ed. Avogadro Constant...1 INTRODUCTION
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Ethanol Production from Waste Banana (Musa paradisiaca l.) Peelings Researchers: * Mitzi B. Pamulaklakin * Irish Jane B. Balisoro * Janina M. Lobusta * Angielyn N. Miranda * Krissa Mae A. de Villa * Albert D. Cruz * Mark Darwin D. Hernandez * Gelbert B. dela Cruz * Rhandell M. Sode Mrs. Flor P. Lapitan Science Teacher Abstract: This study entitled “Ethanol Production from Waste Banana (Musa paradisiaca l.) Peelings” aims to produce
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Objectives After studying this Unit‚ you will be able to • define the biomolecules like carbohydrates‚ proteins and nucleic acids; • classify carbohydrates‚ proteins‚ nucleic acids and vitamins on the basis of their structures; • explain the difference between DNA and RNA; • appreciate the role of biomolecules in biosystem. Biomolecules “It is the harmonious and synchronous progress of chemical reactions in body which leads to life”. 14 Unit A living system grows‚ sustains and reproduces
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fourth edition ORGANIC CHEMISTRY Francis A. Carey University of Virginia Burr Ridge‚ IL Dubuque‚ IA Madison‚ WI New York San Francisco St. Louis Bangkok Bogotá Caracas Lisbon London Madrid Mexico City Milan New Delhi Seoul Singapore Sydney Taipei Toronto | v v Boston | e-Text Main Menu | Textbook Table of Contents | Study Guide Table of Contents McGraw-Hill Higher Education A Division of The McGraw-Hill Companies ORGANIC CHEMISTRY‚ FOURTH EDITION
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CHAPTER 13 HOW CELLS OBTAIN ENERGY FROM FOOD 2009 Garland Science Publishing The Breakdown and Utilization of Sugars and Fats 13-1 Glycolysis is an anaerobic process used to catabolize glucose. What does it mean for this process to be anaerobic? (a) No oxygen is required. (b) No oxidation occurs. (c) It takes place in the lysosome. (d) Glucose is broken down by the addition of electrons. 13-2 Which of the following stages in the breakdown of the piece of toast you had for breakfast generates
Free Cellular respiration Adenosine triphosphate Citric acid cycle
CHAPTER ONE 1.0 INTRODUCTION Natural rubber is produced by over 2000 plants species and its main constituent is poly (cis-I‚4-isoprene).a highly unsaturated hydrocarbon. Since 1914 there have been efforts to investigate microbial rubber degradation: However‚ only recently have the first proteins involved in this process have been identified and characterized and have the corresponding genes cloned. Analysis of the degradation product of natural rubber and synthetic rubbers isolated from various
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BASIC CONCEPTS IN BIOCHEMISTRY A STUDENT’S SURVIVAL GUIDE Second Edition HIRAM F. GILBERT‚ Ph.D. Professor of Biochemistry Baylor College of Medicine Houston‚ Texas McGraw-Hill Health Professions Division New York St. Louis San Francisco Auckland Bogotá Caracas Lisbon London Madrid Mexico City Milan Montreal New Delhi San Juan Singapore Sydney Tokyo Toronto • • • • • • • • • • • • BASIC CONCEPTS IN BIOCHEMISTRY‚ 2/E Copyright © 2000‚ 1992 by the McGraw-Hill Companies‚ Inc. All rights
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