8. How many grams of CaCl2 (molar mass = 111.0 g/mol) are needed to prepare 5.17 L of 0.500 M CaCl2 solution? a. 299 g b. 287 g c. 312 g d. 410 g e. 337 g A 0.216-g sample of NaCI (molar mass58.44 g/mol) is dissolved in enough water to make 5.20 mL of solution. Calculate the molarity of the resulting solution. 0.711 M b. 3.70 x 10 M 19. a. c. 0.823 M d. 1.41 M e. 0,567 M 20. What mass of calcium chloride, CaCl, is needed to prepare 2.657 L of a 1.56 M solution? a. 4.14 g b. 313 g c. 189 g d. 65.2 g e. 460 g 21. A 47.7-g sample of SrCl2 is dissolved in 112.5 mL of solution. Calculate the molarity of this solution. a. 0.301 M b. 2.67 M c. 0.0339 M d. 3,99 M none of these e. 22. Calculate the molarity of a solution prepared by dissolving 6.24 g of Nal in enough water to prepare 312 mL of solution. a. 4,16 x 10 M b. 1.30x 10 M 1.95 M d. 20.0 M 1.33 x 10 M с. e. 23. A 27.9-g sample of HF is dissolved in enough water to give 2.0 x 10 mlL of solution. The concentration of the solution is a. 27.9 M b. 1.39 M c. 0.28 M d. 7.0 M e. 5.58 M CHEM 1405. Review Exercises (chapter 11, 12, 15, 16). FBTC. S19