Question 7 Transcribed Image Text: 4. Find the freezing and boiling point of a 0.760 m aqueous solution of a nonelectrolyte.

5. Calculate the freezing and boiling point of a solution prepared by dissolving 54.2 g of the nonelectrolyte urea,

CO(NH2)2, in 455 g of water.

6. An aqueous solution of a nonelectrolyte boils at 100.82°C. What is the molality of this solution?

7. A solution is prepared by dissolving 114 grams of NaCl in 475 grams of water. Find the freezing and boiling

points of this solution.

8. A solution of KBr is observed to freeze at –3.35°C. What would be the freezing temperature of an equal

molality solution of K3PO4? Explain.

9. How many grams of CaCl2 should be added to 1.60 kg of water in order to prepare a solution that boils at

102.58°C?