Question 1
What is the weight percent of vitamin C in a solution made by dissolving 6.50 g of vitamin C, C
6H
8O
6, in 55.0 g of water?
◦ 0.547%
◦ 1.21%
◦ 10.6%
◦ 11.8%
Question 2
What mass in grams of a molecular substance (molar mass = 50.0 g/mol) must be added to 500 g of water to produce a solution that boils at 101.56 °C? [
Kb(water) = 0.512 °C
m-1]
◦ 76.2 g
◦ 150.0 g
◦ 100.0 g
◦ 30.0 g
◦ 152.4 g