Determination of Energy Balancing In a fuel cell power vehicle: http://www.scribd.com/doc/49625260/39/Fuel-Cell-Energy-Balances Fuel Cell * What is fuel cell * Why we need fuel cell * History of fuell cells * Mathematical methods * Classification of fuel cells * Parts of a fuel cell * Fuel Cell Setup * Modeling of fuel cell * Fuel cell system design * Advantages and disadvantages of fuel cell * Future scope of fuel cell Energy Balance in Fuel Cells
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Complexometric Determination of Water Hardness. Abstract: Using complexometric method of calculating water hardness‚ an EDTA solution was made and calculated to be around .00209M. This EDTA solution was then used to titrate a water sample with unknown hardness. The sample used was sample #18. The hardness of the sample was calculated to be 180505 ppm. This is within normal levels for the Mesa area. Introduction: This experiment focuses on titration with EDTA. Titration
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1 “Arithmetic vs. Geometric Means: Empirical Evidence and Theoretical Issues” by Jay B. Abrams‚ ASA‚ CPA‚ MBA Copyright 1996 There has been a flurry of articles about the relative merits of using the arithmetic mean (AM) versus the geometric mean (GM). The Ibbotson SBBI Yearbook took the first position that the arithmetic mean is the correct mean to use in valuation. Allyn Joyce’s June 1995 BVR article initiated arguments for the GM as the correct mean. The previous articles have centered
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Determining the Chemical Formula of a Hydrate Chemistry 11 3/5/2013 Purpose: To determine the percent by mass of water in a hydrate of copper (II) sulfate hydrate. Hypothesis: I hypothesize that when the solution is heated the hydrate will convert to an anhydrous ionic compound. Then the percentage composition will be determined by weighing the mass of the white crystals. Materials: 400ml beaker‚ hot plate‚ tongs‚ scoopula‚ electronic balance‚ glass rod‚ hot pad‚ and 4g of hydrated
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Opposite Cot = 1/tan Sec= 1/sin Csc = 1cos Special rules | 300 | 450 | 600 | Sin | 12 | 12 | 32 | Cos | 32 | 12 | 12 | tan | 13 | 1 | 2 2 3 300 600 1 1 3 | 2 450 1 1 Area of triangle There is an basic formula for finding the area of a triangle A=12BH but I’m going to look at how to find the area of a triangle WITHOUT the base OR the height. X Y Z As long were are given x‚y AND z we can find the area of this triangle without using the base or height
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COMM3411 Assignment Spring Garden Tools Formula Sheet Decision Variables: This problem contains 20 decision variables‚ representing the number of production of each type of tools produce in different stages. Let i = t (Trowel) = h (Hoe) = r (Rake) = s (Shovel) Then R1i = regular production of product i in stage 1 S1i = subcontracted production of product i in stage 1 O1i = overtime production
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Melissa Carrithers AP Chemistry period 6 2-11-15 Determination of Ka of Weak Acids Purpose: The purpose of this lab is to find the strength of weak acids by determining the equilibrium constants for their ionization reactions in water. Is to use their measured pH values to calculate the pKa for the two unknown weak acids thus determining their identities. Hypothesis: If we neutralize a solution that contains a weak acid by adding a strong base to the solution‚ then the ions will be isolated and
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There are two useful numbers that you can compute with the EAC. One of them is called Estimate to Complete (ETC)‚ which tells you how much more money you’ll probably spend on your project. And the other one‚ Variance at Completion (VAC)‚ predicts what your variance will be when the project is done. ETC = EAC - AC €11‚ 507 – €5‚ 750 = €5‚ 757 (how much the rest of the project likely to cost) Since EAC predicts how much money you’ll spend‚ if you subtract the AC‚ you’ll find out
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Operating Income Percentage Change in Revenues Definition of Degree of Operating Leverage (DOL): The degree of operating leverage (DOL) is a measure‚ at a given level of sales of how a percentage change in sales volume will effect profits. Formula: The
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Complexometric Determination of Water Hardness Kayla Partridge Britni Gonzales 09/15/2014 Abstract Determining the water hardness of unknown sample #55 was determined by complexometric titration. With the use of disodium salt EDTA as the solution to chelate the metal impurities and the Eriochrome Black T indicator as the solution used to help visualize when the impurities were completely chelated‚ along with a few other solutions to help the reaction. Unknown water sample #55 experimental
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