Chapters 15 & 16 Free Response Questions (35 points) Answer each question below with either full sentences or showing all of your work.

1. How would boiling/cooking pasta at high altitudes be different from boiling/cooking pasta at sea level assuming the pasta is cooked completely before serving it? (5 points)

2. How would use a pressure cooker to boil pasta be different from using a regular pot to boil pasta, assuming the pasta is cooked completely before serving it? (5 points)

3. If the solubility of a gas in water is 4.0 g/L when the pressure of the gas above the water is 3.0 atm, what is the pressure of the gas above the water when the solubility of the gas is 1.0 g/L? (5 points)

4. What mass of sodium sulfate (Na2SO4) is needed to make 2.5 L of a 2.0 M solution? (5 points)

5. What is the molality of a solution containing 40.0 grams of calcium chloride (CaCl2) in 0.50 kg of water? (5 points)

6. What is the boiling point of a solution that contains 2.95 moles of CaCl2 in 1,350 grams of water (Kb = 0.512 C/m) (5 points) 7. Calculate the volume, in mL, of 2.000 M HC2H3O2 solution needed to prepare 100 mL of a 0.115 M HC2H3O2 solution. (5 points)