Chapter I THE PROBLEM Introduction Rubber is an elastic hydrocarbon polymer which occurs as a milky emulsion (known as latex) in the sap of a number of plants but can also be produced synthetically. The major commercial source of the latex used to create rubber is the Para rubber tree‚ Hevea brasiliensis (Euphorbiaceae). This is largely because it responds to wounding by producing more latex. Other plants containing latex include figs‚ euphorbias and the common dandelion
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made up of fibrous cellulose‚ which is a carbohydrate‚ and the molecular makeup is a long chain of glucose molecules. Glucose molecules are made up of carbon‚ oxygen‚ and hydrogen with reactive hydroxyl groups. There are as many as 10‚000 glucose monomers per molecule. The molecular chains are arranged in long spiral linear chains within the fiber. The strength of a fiber is directly related to chain length. Hydrogen bonding occurs between cellulose chains in a cotton fiber. Hydrogen bonding occurs
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Fabric Swatch Price and Name Linen 40$/m • Fiber Origin and construction made from the fibers of the flax plant‚ Linum usitatissimum. Spinning of 100# linen (no added cotton) • • • • • • Properties Handle/Drape Laundering/ aftercare • • Spin and tumble Should be dried in the sun constant
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Prefix divide by Pico- Nano- milli- 0.000‚000‚000‚001 0.000‚000‚001 0.001 centi- 0.01 deci- 0.1 deka- 10 hecto- 100 Kilo- 1‚000 Mega 1 kcal = 1000 cal 1 Cal= 1 kcal 1 cal = 4.184 1‚000‚000 • Neutral atoms contain the same number of electrons and protons. • Components of a mixture can be separated (purified) by physical means. • Physical changes alter a substance without any changes to the chemical composition. • Chemical change involves breaking
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Title : Investigation of Action of Saliva and 3M HCl in Two Carbohydrates Solutions. Objective : To investigate the action of saliva and 3M hydrochloric acid in two carbohydrate solution. Result : Table 1 : The presence of starch and reducing sugar in the solution Observation Conclusion Solution A Benedict’s test : The transparent blue solution turns into opaque brick-red precipitate Iodine’s test : The clear colourless solution turns into transparent yellowish-brown
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BSC 2086C: Anatomy and Physiology I Lab 2: The Chemistry of Life Name ____ Directions: There are eight (8) activities in this lab. Please be sure to complete them all. For all questions‚ type your answers into the yellow box ____ (including your name above) it will expand as you write. Activity 1 1-1: Insert the chemical symbol in the answer blank for each of the following elements. ____ 1. oxygen ____ 2. carbon ____ 3. potassium ____ 4. iodine ____ 5. hydrogen ____
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THE GREAT METABOLIC RACE INTRODUCTION During exercise‚ carbohydrates and lipids are required in order to provide energy for the working body. The inherent reduced nature of these compounds allows for partial or complete oxidation in extracting energy in the form of adenosine triphosphate (ATP). The varying chemical structure of the macromolecules evokes different processes for their complete utilisation. This paper seeks to expound on the mobilisation of these fuels‚ the biochemical pathways that
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Bio 8.23.10 Chapter 1 Intro: The study of Life Properties of Life 1. Precise organization (Order) 2. Ability to take in energy and use it. (Energy utilization) 3. Ability to respond to stimuli ( Response to the environment) 4. Capacity for growth and development 5. Ability to reproduce 6. Ability to regulate internal environment (Homeostasis) 7. Ability to evolve ( Evolutionary adaptation) 8. Living organisms are cell based‚ made of one or more cells 9. Life
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Edexel IGCSE Chemistry Revision Notes IGCSE Chemistry Triple Award Revision Guide Topic Introduction to chemistry Atomic Structure Structure and Bonding – Ionic Bonding Structure and Bonding – Covalent and Metallic Bonding Organic Chemistry - Alkanes Organic Chemistry – Alkenes / Addition Polymerisation Organic Chemistry – Alcohols / Condensation Polymerisation Calculations Periodic Table Reactivity Series and Metal Extraction Electrolysis Energetics Acids‚ Bases‚ Salts and Neutralisation
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APPENDIX A: Interim Report 1. Introduction – aim & objective Oil & Gas industry are facing extreme challenges especially as the demand of oil resources is growing every day. The extraction of oil is becoming more technically and geographically challenging as we are going deeper under severe conditions i.e. pressures and temperatures and using complex systems. These complex system and extreme conditions like in wide range of fluids‚ temperatures
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