Question 1
Calculate the molality of a 20.0% by mass ammonium sulfate (NH
4)
2SO
4 solution. The density of the solution is 1.117 g/mL.
◦ 0.150 m
◦ 1.51 m
◦ 1.70 m
◦ 1.89 m
◦ 2.10 m
Question 2
Calculate the molality of a solution containing 14.3 g of NaCl in 42.2 g of water.
◦ 2.45 × 10
–4 m
◦ 5.80 × 10
–4 m
◦ 2.45 × 10
–1 m
◦ 103 m
◦ 5.80 m