Calculate the freezing point of a solution containing 1.25g of benzene in 100g of chloroform

Determine the freezing point of a solution that contains 78.8 g of naphthalene (C₁₀H₈, 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.

What mass of glucose (C₆H₁₂O₆) should be dissolved in 12.0 kg of water to obtain a solution with a freezing point of -5.8^∘C?

Lauryl alcohol is obtained from coconut oil and is used to make detergents. A solution of 5.00 g of lauryl alcohol in 0.100 kg of benzene freezes at 4.1 °C. What is the molar mass of lauryl alcohol from these data? See Table 13.3 for the normal freezing point and 𝐾_f of benzene.