CHEMISTRY EXPERIMENT NUMBER 8 PERCENTAGE OF WATER IN A HYDRATE Objectives 1. To determine the percentage of water in barium chloride dihydrate. 2. To determine the percentage of water in an unknown hydrate salt. 3. To calculate the water of crystallization for the unknown hydrate salt. Discussion A hydrate salt is composed of anions (negative ions) and cations (positive ions) which are surrounded by and weakly bonded water molecules. Each hydrate salt has a fixed number
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itself Approach 1. Solve small problem directly 2. Simplify large problem into 1 or more smaller subproblem(s) & solve recursively 3. Calculate solution from solution(s) for subproblem Algorithm Format 1. Base case Solve small problem directly 2. Recursive step Simplify problem into smaller subproblem(s) Recursively apply algorithm to subproblem(s) Calculate overall solution Example – Find To find an element in an array Base case If array is empty‚ return false Recursive step If 1st element
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equation to balance the books. They also use algebra to calculate journal entries for interest payments and depreciation (Moore‚ n.d.). To analyze and work with numbers‚ accountants also need to understand positive and negative numbers‚ fractions and decimals. Other businesses that use algebra include retail stores‚ car dealerships and restaurants to name just a few. Each of these types of businesses sells a product and needs to calculate percentage discounts‚ sales or meals tax and profit margins
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Chapter 6 practice MULTIPLE CHOICE 1. The formula for acetic acid‚ CH3CO2H‚ is an example of a(n) a.|condensed formula.| b.|mathematical formula.| c.|structural formula.| d.|molecular formula.| ANS: A OBJ: Goal #3.1: Interpret‚ predict‚ and write formulas for ionic and molecular compounds 3. Which of the following statements are correct? 1.|Metals generally lose electrons to become cations.| 2.|Nonmetals generally gain electrons to become anions.| 3.|Group 2A metals
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elements and the nature of those costs – define and give relevant examples of variable‚ fixed‚ semi-variable‚ direct and indirect costs 2. Suggest the weekly production level and a breakdown of costs for one product from your chosen business. Then calculate the marginal and absorption costs per unit. 3. Describe at least 2 methods of setting the price‚ including cost-plus pricing. Then suggest which method is best suited to your chosen business’ product and why. You may wish to choose a business
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Experiment 24 - A Rate Law and Activation Energy Observe • To conduct an experiment in order to discover and calculate the expression known as the rate law for a particular reaction. • To conduct an experiment in order to determine the role each reactant plays within the reaction and the overall activation energy that is needed for a chemical reaction to occur all while utilizing an analytical tool. Procedure 1. Determination of Reaction Rates • Obtain boiled‚ deionized water‚ pipets or burets
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the equation for the reaction of barium chloride with silver nitrate. 2. Predict the mole ratio of BaCl2 to AgCl for the equation. 3. If an experiment with 10.2 g barium chloride produced 14.5 g silver chloride‚ calculate the experimental mole ratio of silver chloride to barium chloride. Name:_______________________ MASS AND MOLE RELATIONSHIPS IN A CHEMICAL REACTION Discussion: In this experiment‚ you will
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three firms. Calculate the missing amounts for each firm. Firm A Firm B Firm C Total assets‚ 12/31/10 $401‚000 $531‚000 $334‚000 Total liabilities‚ 12/31/10 222‚000 143‚000 ___________ Paid-in capital‚ 12/31/10 85‚000 [pic] 42‚000 Retained earnings‚ 12/31/10 [pic] 319‚000 ___________ Net income for 2010 _________ 91‚000 116‚000 Dividends declared and paid during 2010 50‚000 12‚000 62‚000 Retained earnings‚ 1/1/10 79‚000 _________ 35‚000 [pic] Calculate the missing amounts
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KC expression for the reaction 1.1? KC = [FeSCN2+]/([Fe3+]•[SCN-] Calculate the initial concentration of [Fe3+ ] in mixtures 1-4 (total volume was 4mL)? [Fe3+]i = 0.002M (0.002L) = 1.0e-3M 0.004L Calculate the initial concentration of SCN- in mixtures 1-4 (total volume was 4mL)? M1V1=M2V2 -> 0.2M(x) = 0.002M(50mL) -> x = 0.5mL (amount of SCN- (mL) added) [SCN- ]= 0.002M (0.0005L) = 2.5e-4 M 0.004L Calculate [FeSCN2+] (control) in cuvette #5? [FeSCN2+] = [SCN- ] because in the
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Purpose The purpose of this assignment it to have Excel calculate the requirements automatically through formulas and/or functions. You need to enter as much of the above information as you can in an Excel spreadsheet and create formulas and/or functions that will automatically calculate the results. *Be resourceful. Use the textbook if you need help and you can also research the web for ideas. *Try your best. This is not a math course and we will not answer math related questions. You may
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