PROBLEM SOLVING 31-40 in solving for concentration of solute or solvent, use the formula X 100 % Mass = mass of solute X 100 % Volume= volume of solute mass of solution volume of solution 31-35. Problem 1. What is the percentage by mass of 50g salt (NaCl) dissolved in a 500g of water. GIVEN: mass of solute: ;____________ mass of solution:_________ UNKNOWN: (What is ASKED?)_______________ EQUATION: (What is the formula?)____________ SOLUTION:​