Question

calculate the molarity of a solution prepared by dissolving 9.8 moles of solid NaOH in enough water to make 3.62 L of solution

Answer 1

The molarity of a solution can be calculated by formula: n/v, where n -- number of moles of a solid, and v -- volume of a solution. Here n=9.8 moles, v = 3.62 L -- so, molarity is 9.8/3.62=2.7 mol/L.