Experiment 28 Advance Study Assignment: Determination of the Hardness of Water 1. A 0.3946 g sample of CaCO, is dissolved in 12 M HCI and the resulting solution is diluted to 250.0 mL in a volumetric flask. a. How many moles of CACO, are used (formula mass = 100.1)? moles b. What is the molarity of the Ca²* in the 250 mL of solution? M c. How many moles of Ca* are in a 25.00-mL aliquot of the solution in Ib? moles * moles of CacOs = Weight in gram formula mass 0-3946 1001 E3.942 x 10-3 mol Molanity moles of solute Volume of solution (L) 3.942 x 1o-3 x 1000 250 0.0158 M Imol Caco, produce. I mol Cat ion 0.0158 M Moles off Ca?+ = Molarity x 0.0158 Vo lume lin L) 25 1000 3.94 X10-4 mol.
Experiment 28 Advance Study Assignment: Determination of the Hardness of Water 1. A 0.3946 g sample of CaCO, is dissolved in 12 M HCI and the resulting solution is diluted to 250.0 mL in a volumetric flask. a. How many moles of CACO, are used (formula mass = 100.1)? moles b. What is the molarity of the Ca²* in the 250 mL of solution? M c. How many moles of Ca* are in a 25.00-mL aliquot of the solution in Ib? moles * moles of CacOs = Weight in gram formula mass 0-3946 1001 E3.942 x 10-3 mol Molanity moles of solute Volume of solution (L) 3.942 x 1o-3 x 1000 250 0.0158 M Imol Caco, produce. I mol Cat ion 0.0158 M Moles off Ca?+ = Molarity x 0.0158 Vo lume lin L) 25 1000 3.94 X10-4 mol.
Chapter3: Statistical Tests With Excel
Section: Chapter Questions
Problem 6P
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