Calculate the osmotic pressure of each of the following aqueous solutions at 20°C and select the correct units. a. 2.28 M methanol (CH3OH). II = 192.44 b. 9.22 mM MgCl₂. II = 0.0481 II = 1.467 x atm c. 41.2 mL of glycerol (C3H8O3) in 450.0 mL of aqueous solution. Density of glycerol = 1.265 g/mL x atm II = 0.722 xatm d. 21.1 g of CaCl2 in 300 mL of solution. x atm Hint: For each solution we have to calculate the molarity of the solution (if not already given) and determine the theoretical value of i (the van't Hoff factor) for the solute. The temperature for all solutions is (20+ 273.15) = 293.15 K.

Calculate the molality of a solution formed by adding 3.159 g of methanol (CH3OH) to 100.00 mL of water. The density of water is 0.9982 g/mL. DO not include units. The lattice energy for KF is 821 kJ/mol. The enthalpy of hydration for K+ is -336 kJ/mol and the enthalpy of hydration for F- is -431 kJ/mol. What is the enthalpy in kJ when 14.91 g of KF forms an aqueous solution? (Hint: start by finding the enthalpy of solution)

Your pure water boils at 100.00 C. You add some sugar into it and now it boils at 101.20C. What is the molality? Kb= 0.512 Ckg/mol

5. Lysozyme is an enzyme that cleaves cell walls. A 0.100-L sample of a solution of lysozyme that contains 0.0750 g of the enzyme exhibits an osmotic pressure of 1.32 x 103 atm at 25 °C. What is the molar mass of lysozyme?