Consider an aqueous solution that contains

Question

22 % (by mass) of a hypothetical solute Z.
The formula weight of the solute Z is 215.2.
The density of the solution is observed to be
1.12 g/mL. What is the molarity of Z in this
solution?
Answer in grams

Answer 1

22% w/w means 22 g solute Z in 100 g solution.
mols in 22 g = 22/215.2 = ?
Use density to convert 100 g to mL and convert to L.
Then M = mols/L

Answer 2

1.14