p. 82, #1-8

1. It will completely dissolve the sugar in a serving of hot tea because with some substances, as the temperature goes up so does the solubility.
2. The maximum mass of potassium chloride that will dissolve in 100 g of water at 70 degrees celsius is about 130 g.
3.
a. 100 mL water? 200 g of sugar
b. 355 mL (12 oz) water? 710 g of sugar
c. 946 mL (1 qt) water? 1892 g of sugar
4.
a. NaCl, KCL, KNO3
b. KNO3, KCL, NaCl
5. When a solution is saturated, it means that the solution contains the maximum amount of a substance that can dissolve in that amount of water. When a solution is unsaturated, it means that the solvent has not dissolved the maximum solute that it can dissolve.
6.
a. 31 g
b. It is supersaturated
c. 70g of KNO3 should form as the saturated solution cools
7.
a. Nothing will happen. If it is unsaturated, you are just adding solute to the solvent without reaching the maximum capacity.
b. It will become supersaturated or the crystal will float to the bottom.
c. It will disturb the supersaturated solution and it will collapse and crystals will form.
8. 30%