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When 24.0 g of a nonelectrolyte are dissolved in 500 g of water, the solution has a freezing point of –0.47°C.  What is the molar mass of the nonelectrolyte?  Kf of water is 1.86°C/m.

Which of the following substances should have the highest boiling point?

Which one of the following substances is expected to have the highest boiling point?

What is the osmotic pressure of a 0.42 M solution of sucrose at 28°C? (R = 0.0821 L·atm/K·mol)

A solution is prepared by mixing 500 mL of 0.10 M NaOCl and 500 mL of 0.20 M HOCl. What is the pH of this solution?   [Ka(HOCl) = 3.2 x 10–8]

Calculate the amount of heat necessary to raise the temperature of 12.0 g of water from 15.4°C to 93.0°C. The specific heat of water = 4.18 J/g·°C.

What is the freezing point of a solution that contains 15.0 g of glucose (C6H12O6) in 120 g of H2O?   Kf for water is 1.86°C/m.

What is the pH of a 0.20 M solution of NH4Cl?  [Kb(NH3) = 1.8 x 10–5]

At what temperature will a fixed amount of gas with a volume of 175 L at 15°C and 760 mmHg occupy a volume of 198 L at a pressure of 640 mm Hg?

For the following reaction at equilibrium, which choice gives a change that will shift the position of equilibrium to favor formation of more products? 2NOBr(g)   ↔   2NO(g) + Br2(g),     DHºrxn = 30 kJ/mol