Question 1
A 1.35
m solution of NaOCl in water is prepared. What is the mole fraction of the NaOCl?
◦ 0.0135
◦ 0.0243
◦ 0.0271
◦ 0.0237
◦ 0.0263
Question 2
A 15.00 % by mass solution of lactose (C
12H
22O
11, 342.30 g/mol) in water has a density of 1.0602 g/mL at 20°C. What is the molarity of this solution?
◦ 0.03097 M
◦ 0.4133 M
◦ 0.4646 M
◦ 1.590 M
◦ 3.097 M