been watered down‚ to complete this task a sample of commercial vinegar was tested twice using titration and an average was taken of the two samples to give a base line to compare the potentially tampered samples against. Introduction Vinegar is a solution made from the fermentation of ethanol (CH3CH2OH)‚ which in turn was previously fermented from sugar. The fermentation of ethanol results in the production of acetic acid (CH3COOH). The typical pH of vinegar ranges anywhere from 2 to 3.5‚ although
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Steven E. Shreve Stochastic Calculus for Finance I Student’s Manual: Solutions to Selected Exercises December 14‚ 2004 Springer Berlin Heidelberg NewYork Hong Kong London Milan Paris Tokyo Contents 1 1 Probability Theory on Coin Toss Space . . . . . . . . . . . . . . . . . . . . 7 2.9 Solutions to Selected Exercises . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 1.7 Solutions to Selected Exercises . . . . . . . . . . . . . . . . . . . . . . . . .
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EMAIL me before you submit. This assignment must be submitted no later than November 22nd‚ 2011. 1. What is a true solution? Explain why the solute does not settle out of a solution. Is it possible to have one solid dissolved in another? Explain. In metals it would be called an alloy. 2. An aqueous solution of KCl is colorless‚ KMnO4 is purple‚ and K2Cr2O7 is orange. What color would you expect of an aqueous solution of Na2Cr2O7? Explain. Orange. 3. Explain why hexane will dissolve benzene
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Chemistry F332 Notes Ions in solids and solutions: Structure of an ionic lattice (Sodium Chloride): * Consists of sodium ions (Na+) surrounded by six chloride ions (Cl-) * Chloride ions also surrounded by six sodium ions. * Held together by attraction of oppositely charged ions. * Giant ionic lattice. * Electrostatic bonds hold lattices together. * Structure is simple cubic. * Some ionic crystals contain water. * Known as water of crystallisation. * These crystals
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bond interest expense reported in 2011 be the same as‚ greater than‚ or less than the amount that would be reported if the straight-line method of amortization were used? (3) Determine the total cost of borrowing over the life of the bond. (4) Would the total bond interest expense be greater than‚ the same as‚ or less than the total interest expense that would be reported if the straight-line method of amortization were used? SOLUTION (a) (1) 2010 July 1 Cash 3‚501‚514 Discount on
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zero? Assume α = 6.5 × 10-6 in/(in·°F) and E = 29 × 106 psi. Solution 261 For the stress at 0°C: answer For the temperature that causes zero stress: answer problem 262 A steel rod is stretched between two rigid walls and carries a tensile load of 5000 N at 20°C. If the allowable stress is not to exceed 130 MPa at -20°C‚ what is the minimum diameter of the rod? Assume α = 11.7 µm/(m·°C) and E = 200 GPa. Solution 262 d answer Problem 263 Steel railroad reels
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Experiment 3 : Preparation of Solutions and Buffers Objectives : 1. To study and understand the principle theory and formula of preparation of buffer and solution. 2. To learn the methods of buffer and solution preparation. 3. To focus on concentration units of molarity‚ percentage of concentration‚ and dilution of solution. Introduction : When a substance‚ called a solute‚ is dissolved in another substance‚ called the solvent‚ a solution is formed. A solution is known as a homogeneous
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Homework 2 Solution 1. Consider the diagram of the electronic system‚ which shows the probabilities of the system components operating properly. The entire system operates if assembly III and at least one of the components in each of assemblies I and II operates. Assume that the components of each assembly operate independently and that the assemblies operate independently. What is the probability that the entire system operates? 0.9 0.9 0.8 0.8 0.7 I II III 0.95 Solution: P = [1-(1-0.9)*(1-0
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Comprehensive Volume/Solutions to Appendix E © 2014 Cengage Learning. All Rights Reserved. May not be scanned‚ copied or duplicated‚ or posted to a publicly accessible website‚ in whole or in part. David R. and Sheri N. Johnson—Individual Income Tax Return E-3 © 2014 Cengage Learning. All Rights Reserved. May not be scanned‚ copied or duplicated‚ or posted to a publicly accessible website‚ in whole or in part. E-4 SWFT 2014: Comprehensive Volume/Solutions to Appendix E © 2014
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Solution A homogeneous mixture of two or more substances with each substance retaining its own chemical identity. Solute – substance being dissolved. Solvent – liquid water. General Properties of a Solution 1. Contains 2 or more components. 2. Has variable composition. 3. Properties change as the ratio of solute to solvent is changed. 4. Dissolved solutes are present as individual particles. 5. Solutes remain uniformly distributed and will not settle out with time. 6. Solute
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