What is the molarity of a solution of 10.0% by mass cadmium sulfate, CdSO4 (molar mass = 208.46 g/mol) by mass? The density of the solution is 1.10 g/mL.

Answer 1

1 liter of solution weighs 1100 g. 110 g of that liter (10%) is CdSO4, and that corresponds to 110/208.46 = 0.528 moles.

Molarity = 0.528 moles solute/1.0 liter of solution = 0.528