Major Chemistry questions: 1. Analyse the progress in the development and use of a named bioploymer. This anslysis should name the specific enzyme(s) used or organism used to synthesise the material and an evaluation of the use or potential use of the polymer produced related to it’s properties. Polyhydroxybutanoate (PHB) Progress Analysis: - Bacteria first used to make PHB in 1925 at Pastuer Institute in Paris. - In 1970’s adopted by Imperial Chemical Industries (ICI) – Alcaligenes
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Name: Shahid Hussain Subject: Chemistry Teacher: Dr Ramani Topic: Comparing Solutions Saturated Solutions | A solution that can hold no more of the solute at a particular temperature is said to be a saturated solution at that temperature. | When someone adds sugar to iced tea‚ the sugar disappears. If you add one teaspoon of sugar to iced tea‚ you get an unsaturated solution. If you keep
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Regents Chemistry Quarter 1 Midterm Review 1. The percent by mass of oxygen in Na2SO4 (formula mass = 142) is closest to 1) 11% 3) 45% 2) 22% 4) 64% 2. Given the unbalanced equation: __Al(s) + __O2(g) → __Al2O3(s) 3. 4. 5. 6. 7. balance the equation using smallest whole number coefficients. The percent by mass of aluminum in Al2O3 is approximately 1) 18.9 3) 47.1 2) 35.4 4) 52.9 What is the approximate percent composition by mass of CaBr2 (formula mass = 200)
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3702 Assignment 01: 889876 Write an essay on the following subheadings: - The concept of ‘heritage’ by referring to both its cultural and natural aspects of -The main role and objectives of the World Heritage Convention Act (ACT No. 49 of 1999) provide two examples of World Heritage sites on South Africa; and -The term Cultural Resource Management (CRM) as used in the South African context TABLE OF CONTENTS PAGE 1 Introduction 2 2 The concept ‘heritage’ 2-3 3 4 The World Heritage Convection
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Legacy of World Wars Richard Castaneda POL 401 Baker College May 22‚ 2014 The First World War lasted from 1914 until 1918 and had major consequences that influenced a continuation to World War II. The war resulted in the dramatic change of the world map. Several empires disappeared and many new countries were born. World War I involved the signing of several peace treaties that benefited the Allies but left the countries like Germany in with loads of debt and with the frustration of defeat
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Successful texts encourage us to think about our world in new ways Film: Witness Schaeffer interrogation Scene Eli and Rachel Scene Thesis The film witness encourages us to think about our world in new ways. Witness shows us an underlying theme of corruption and encourages us to think of our society as evil. Witness achieves this through a comparison between the Amish and English world. Schaeffer represents the evil of the English world‚ this is shown through the interrogation scene
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Chemistry Notes Cracking: * 2 types of Cracking; Catalytic cracking and Steam/thermal cracking. * Catalytic cracking‚ using a catalyst called Zeolite (Aluminosilicate)‚ 500 degrees C‚ in the absence of air and at pressures just above atmospheric * Thermal cracking is done without a catalyst; steam is passed through very hot metal tubes at 700-1000 degrees C at just above atmospheric pressure. * This is used to break down longer chains of unsalable hydrocarbons into smaller salable
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Chemistry Coursework – Titration Background Science A titration is the neutralisation of an acid or an alkali. To achieve this‚ one must be added to the other in a specific amount‚ strength and concentration. A substance is neutral when its pH is 7. It is most acidic closer to 0 and is most alkaline closer to 14. 28492453194050 0 7 14 595423979670
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DEPARTMENT OF INFORMATION SCIENCE LEARNING HOW TO PROVIDE REFERENCE SERVICES INS 2602 INFORMATION ETHICS AND CODES SEMESTER: 02/2014 STUDENT NAME: FAEEDA ALMANO STUDENT NUMBER: 50898140 ASSIGNMENT: 01 UNIQUE NUMBER: 878922 Declaration Statement: I declare that this is my own original work prepared specifically for the module; INS 2602‚ and that all sources I have used or quoted have been indicated and acknowledged by means of complete references Faeeda Almano 2014/08/18 Table of Contents
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I Term Exam Chemistry Project Sunday‚ January 13‚ 2013 Grade/Section: Date: Question I: State whether each statement is true or false‚ then correct each incorrect statement. (7pts‚ 1 point each) 1- An Element is a substance that can be broken down into simpler substance by chemical means. 2- The Aufbau Principle states that energy levels must be filled from the highest to the lowest‚ when writing the election configuration. 3- Atomic radius decreases across a period
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