1) How many total moles of ions are released when each of the following samples dissolves completely in water?
(b) 7.22 g of MgSO47 H2O
(c) 5.962 1021 formula units of NiCl2
2) If 21.0 mL of silver nitrate solution reacts with excess potassium chloride solution to yield 0.882 g of precipitate, what is the molarity of silver ion in the original solution?