Calculate the molarity of a solution prepared by dissolving 13.6 g ZnCl2 in 432 g H2O. Assume that the density of the solution is 1.00 g/mL. The molar mass of ZnCl2 is 136.29 g/mol and the molar mass of H2O is 18.02 g/mol.

Answer 1

mols ZnCl2 = grams/molar mass = ?
volume H2O = mass H2O/density H2O = ?
M = mols/L.

From the problem it sounds like you want molality.