If a solution is prepared by dissolving 7.7 g of lithium iodide, LiI, in enough water to make 400. mL of solution, what is the %(w/v) of LiI? A) 0.96% B) 1.9% C) 3.9% D) 7.7% answer B = (7.79 / 400) x 100 =1.94%