[SOLVED] % mass by Vol problem 1. The problem statement, all variables and given/known data Concentrated Hydrochloric acid is 37% HCl by mass and has a density of 1.19 g/ml. What is the molarity of HCl. 2. Relevant equations Mass = D(V) 1 mole HCl = 36.5g 3. The attempt at a solution What has thrown me off on this problem is that volume is not given. So I assume 100ml. With that I can compute mass = 1.19g/ml (100ml) = 119g Where 36.5 is 1 mol HCl So then I compute 119g/36.5g = 3.26 mole Did I do that right? I really don't feel confident on this problem.