Magnesium chloride is dissolved in 150.0 mL of water to make a 12.5% MgCl₂ solution by mass. The solution has a density of 1.105 g/cm³. Calculate the mass of solute or solvent that must be added in order to make the boiling point of the solution 108.2°C. The van't Hoff factor of MgCl₂ is 2.70.