Calculate the freezing point and boiling point of a solution containing 12.4 g of naphthalene (C10H8) in 103.0 mL of benzene. Benzene has a density of 0.877 g/cm3. Calculate the freezing point of a solution. (Kf(benzene)=5.12°C/m.). Calculate the boiling point of a solution. (Kb(benzene)=2.53°C/m .)