Show all your work and use the correct number of significant figures and units. 1. A potassium nitrate solution is made by mixing 8.52 g of potassium nitrate with 120.0 mL of water. Use the molar mass of KNO3 given below if necessary. Molar mass of KNO3 = 101.10 g/mol a. Determine the number of moles of potassium nitrate used to make the solution. Show your work. (10 points) b. Determine the mass (in kg) of solvent used to make the solution. Assume that the density of water is 1.000 g Show your work. (10 points)​

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Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml

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