Assignment:
Q1. Calculate the mass of propylene glycol (C3H8O2) that must be added to 0.340 kg of water to reduce the vapor pressure by 2.88 torr at 40 °C.
Q2. Calculate the freezing point and boiling point of an antifreeze solution that is 50.0 % by mass of ethylene glycol (C2H6O2) in water.
Q3. Calculate the freezing point and boiling point of a barium chloride solution that is 4.0 % by mass of barium chloride in ethanol.
Q4. What is the osmotic pressure of a solution formed by dissolving 44.2 mg of aspirin (C9H8O4) in 0.358 L of water at 25 °C?
Provide complete and step by step solution for the question and show calculations and use formulas.