p. 56 # 1-3

1) a) 106 grams of potassium nitrate (KNO3) will dissolve in 100 g water at 60 degrees C
    b) 43 grams of potassium chloride (KCl) will dissolve in 100 g water at the same (60 degree C)           temperature.

2) a) When you dissolve 25 g potassium nitrate in 100 g water at 30 degree C you produce an unsaturated solution. 15 more grams of potassium nitrate must be added to form a saturated solution at 30 degree C.
    b) The minimum mass of 30 degree C water needed to dissolve 25 g of potassium nitrate is 45 grams of potassium nitrate in 180 g of water.

3) a) 60 g of potassium nitrate will precipitate.
    b) 10 g of water would have to be added.