Determine the freezing point of a solution that contains 78.8 g of naphthalene (C 10H 8, molar mass = 128.16 g/mol) dissolved in 722 mL of benzene (d = 0.877 g/mL). Pure benzene has a melting point of 5.50°C and a freezing point depression constant of 4.90°C/ m.1.33°C0.74°C4.17°C4.76°C1.68°C