Question 1
Calculate the mole fraction of KI in a solution made by dissolving 3.4 g of KI in 5.8 g of water.
◦ 0.060
◦ 0.064
◦ 0.37
◦ 0.59
◦ 6.4
Question 2
Calculate the percent by mass of potassium nitrate in a solution made from 45.0 g KNO
3 and 295 mL of water. The density of water is 0.997 g/mL.
◦ 1.51 %
◦ 7.57 %
◦ 13.3 %
◦ 15.2 %
◦ None of these