Calculate the freezing point of a solution made from 42.1 g of propane, C₃H₈ (mm= 44.11  g/mol), dissolved in 108.3 g of benzene, C₆H₆ (mm= 78.11 g/mol). The freezing point of benzene is 5.50° C and its K_f is 5.12° C/m. In your answer provide the correct number of SigFigs and units.

What is the osmotic pressure at 22 °C of a 2.00 L solution containing 28.62 g of KCl (mm = 74.6 g/mol)? In your answer provide the correct number of SigFigs and units.