Determination of a Rate Law Megan Gilleland 10.11.2012 Dr. Charles J. Horn Abstract: This two part experiment is designed to determine the rate law of the following reaction‚ 2I-(aq) + H2O2(aq) + 2H+I2(aq) + 2H2O(L)‚ and to then determine if a change in temperature has an effect on that rate of this reaction. It was found that the reaction rate=k[I-]^1[H2O2+]^1‚ and the experimental activation energy is 60.62 KJ/mol. Introduction The rate of a chemical reaction often
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Experiment 4A: Determination of a Partition Coefficient for Benzoic Acid in Methylene Chloride and Water Experiment 4B: Solvent Extraction I: Acid-Base Extraction Using the System Benzoic Acid‚ Methylene Chloride‚ and Sodium Bicarbonate Solution Objective A: To accustom participants (students) to general procedures that are used to obtain a partition coefficient at the microscale level. We will gain experience in such practices as the transfer of microliter volumes of solutions with a Pasteur filter
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Beam Lab Report Introduction This experiment aimed to study the forced damped transverse vibration of a beam and verify Dunkerley’s empirical formula. According to Dunkerley’s empirical formula‚ 1f2=1fb2+1fω2 where f referring to the natural frequency of heavy beam with central load fb referring to the natural frequency of heavy beam only fω referring to the natural frequency of light beam with central load M By using the results of light damping‚ Dunkerley’s empirical formula would
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Enhanced spectrofluorimetric determination of Mebendazole‚ a benzimidazole anthelmintic drug‚ through complex formation with Lanthanum (III)‚ in pharmaceutical preparations and spiked human plasma Abstract The article concerned with the development of simple‚ sensitive‚ rapid and specific spectrofluorimetric procedure for determination of mebendazole. The cited drug was reacted with lanthanum (III) ions to produce highly fluorescent stable complex measured at 340 nm after excitation at 295 nm. Different
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The use of the Empirical Rule When the mean=median and the values often tend to cluster around the mean and median‚ producing a bell-shaped distribution. Then we can use the empirical rule to examine the variability. Usually in this bell-shaped data set‚ we can calculate the mean the standard deviation. The mean means the average value of this set of data. The standard deviation means the average scatter around the mean. If we allow[pic]to represents the mean and[pic]to represents the standard
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* Chemical Formulas and Reactions . . . Midterm Objectives: * To balance chemical equations. * To interpret chemical reactions. * To understand equilibrium reactions and the factors that can affect them. * Molecular Mass / Formula Mass * Is the sum of the atomic masses of all the atoms present in one molecule of that compound. Example: the molecular mass of sodium bromide‚ NaBr‚ is 103‚ which represents the sum of the atomic mass of sodium (23) plus that of bromide (80)
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In Exercise 2‚ we calibrated the Power Lab program to the blood pressure cuff. In Exercise 3‚ we estimated the systolic pressure in the upper arm using Korotkoff sounds and by finding the pressure corresponding to when blood flow began in the brachial artery. In Exercises 4 and 5‚ we estimated
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CHEMISTRY EXPERIMENTAL REPORT SALLY LI INTRODUCTION: In chemistry‚ compounds can be distinguished by using the empirical formula. The formula provides the simplest positive integer ratio of elements in a compound. The empirical formula is largely useful in determining the ratio of elements within ionic compounds where the structure is of a non-directional nature of bonding where any ion at any time could be surrounded by
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Determination In “The Glass Castle” we see many different possibilities pertaining to Maslow’s Hierarchy of Needs. We see the father‚ Rex and one of the daughters‚ Maureen‚ who fall victim to Maslow. Then there’s Jeanette and the mother‚ Rose Mary who have both seemed to achieve self-actualization regardless of their hardships. Traditionally‚ Maslow’s Hierarchy is thought to be achieved by working up from the bottom of the pyramid to get to the top. However‚ in “The Glass Castle” this is not particularly
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AKS Review: Moles AKS Correlation 9c. Apply concepts of the mole and Avogadro’s number to conceptualize and calculate: -empirical/molecular formulas -mass‚ moles‚ and molecules relationships In all calculations that follow‚ SHOW ALL WORK AND USE SIGNIFICANT FIGURES. 1. Write Avogadro’s number in standard and in scientific notation. 2. What is a mole? 3. (a) In your own words‚ what is molar mass? (b) Find the molar mass of the following: Fe
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