A 100.0-mL aqueous sodium chloride solution is 13.4% NaCl by mass and has a density of 1.12g/mL. What mass of solute would you add to make the

A 100.0-mL aqueous sodium chloride solution is 13.4% NaCl by mass and has a density of 1.12g/mL.
What mass of solute would you add to make the boiling point of the solution 104.4 ∘C? (Use i = 1.8 for NaCl)
Please explain how to do the question above, thank you! 🙂