Purpose: In this lab‚ we will heat up a metal rod and measure how much it expands. We will calculate its Coefficient of Linear Expansion‚ α‚ and prove the formula for thermal expansion‚ ΔL = αLiΔT. Also‚ we heat up a known volume of methyl alcohol and calculate its Coefficient of Volume Expansion‚ β‚ and prove the formula for volume expansion of a liquid ΔV = βViΔT. Equipment: Hollow Metal Rods of different metals‚ Steam Generator‚ Stand‚ Burner‚ Flexible Hoses‚ Motion Amplifier‚ Micrometer
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Ion Exchange Chromatography Discussion: The first exercise preformed in this lab was ion exchange chromatography. The purpose of this experiment is to separate molecules based on their differences in charge. Since it is based on charge the amino acids in the cation exchange column‚ if negatively charged‚ flow through the column first because they don’t want to bind to the sodium ions. The positively charged ions will elute last at the highest ph because they bind to the negatively charged beads
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The fallibility of Eyewitness Identification and Testimony INTRODUCTION: Eyewitness identification and testimonies are relied on heavily by the criminal justice system to help with investigation and prosecution of crimes and criminals. Due to the increase in the use of eyewitness identification psychologist began studying the results more efficiently to gain a clearer understanding of the risks it holds.. A scientific literature on this specific topic was created and highlighted the issues that
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concentration of ions of a sparingly soluble salt in water OTHER than at equilibrium is called the IONIC PRODUCT Example 1. AgCl [pic] Ag+ + Cl- Ksp = [Ag+][Cl-] Example 2 Cu(OH)2 [pic] Cu2+ + 2OH- Ksp = [Cu2+][OH-]2 Checkpoint A Write the Ksp expressions for the sparingly soluble salts below a. AgF b. HgCl2 c. Cu(OH)2 Common ion effect The solubility of one salt is reduced by the presence of another salt having a common ion. For example
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Senior Secondary School and Junior College Mandaveli Chennai – 600028 A CHEMISTRY PROJECT “STUDY OF THE OXALATE ION CONTENT IN GUAVA FRUIT” Submitted in the partial Fulfilment of the requirement for AISSCE 2010-2011 By Abdud Dayan Adeeb Of Class XII C St. John’s Senior Secondary School and Junior College Mandaveli Chennai – 600028 A CHEMISTRY PROJECT “STUDY OF THE OXALATE ION CONTENT IN GUAVA FRUIT” Submitted in the partial Fulfilment of the requirement for AISSCE 2010-2011 By Jagadeesh
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the urine and neutralizes the acid compounds of the body such as phosphates‚ urea and ammonia. It is‚ therefore‚ highly beneficial in the treatment of acidosis and other diseases associated with too much acid in the system. The presence of oxalate ions and oxalic acid content in tomatoes is also a cause of kidney stones. Several researches have proven that the
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Mali Lewis Communication 1310 Cattle Identification in Commercial Agriculture Topic: Methods of Cattle Identification Organization: Topically Specific Purpose: I want my audience to understand the different methods of cattle identification that are used in the commercial agriculture industry. I. Introduction A. Attention getter: A traditional West Texas saying goes‚ “trust your neighbors‚ but brand your cattle.” B. Relevance: Commercial agriculture contributes to the food we eat‚ and through
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Axia College Material Appendix C Mineral Identification Worksheet Open the simulation and print this worksheet and the Mineral Identification Job Aid. Then do the following: 1. Conduct all tests on the minerals in the virtual lab. Minerals in the virtual lab are numbered 1–7. Keep track of which mineral you are working with as you record your observations. 2. Record your observations of each test in Part 1 of this worksheet. Help: Refer to the job aids in the upper right
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Oxidation Lab Part 1: Purpose: You are going to investigate the ease with which different metals undergo oxidation and reduction. Materials: | 4 samples of each of: lead‚ zinc‚ iron‚ copper | spot plates steel wool/sand paper | | | | Solutions of: | copper(II) sulfate Ferric nitrate Silver nitrate Lead (II) nitrate | | Procedure: 1. Obtain 4 samples of each metal and clean with steel wool or sand paper. Wash your hands after cleaning the metals so you are not exposed to lead
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MECH A NIS MS OF D IS EASE Review Article Mechanisms of Disease F R A N K L I N H . E P S T E I N ‚ M. D. ‚ Editor ION CHANNELS — BASIC SCIENCE AND CLINICAL DISEASE AND MICHAEL J. ACKERMAN‚ M.D.‚ PH.D.‚ DAVID E. CLAPHAM‚ M.D.‚ PH.D. I ON channels constitute a class of proteins that is ultimately responsible for generating and orchestrating the electrical signals passing through the thinking brain‚ the beating heart‚ and the contracting muscle. Using the methods of molecular biology
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