Question

What is the molarity of a HNO₃ solution prepared by adding 255.4 mL of water to 350.0 mL of 12.3 M HNO₃?

A)	16.9 M
B)	7.45 M
C)	7.11 M
D)	2.61 M
E)	3.14 M

The solubility of O₂ in water is 0.590 g/L at an oxygen pressure of around 14.5 atm. What is the Henry's law constant for O₂ (in units of mol/L·atm)?

A)	4.07 ´ 10–2
B)	1.27 ´ 10–3
C)	7.86 ´ 102
D)	2.67 ´ 10–1
E)	None of the above are within 5% of the correct answer.

A solution is prepared from 53.8 g of a nonvolatile, nondissociating solute and 85.0 g of water. The vapor pressure of the solution at 60°C is 132 torr. The vapor pressure of water at 60°C is 150. torr. What is the molar mass of the solute?

A)	61.1 g/mol
B)	11.4 g/mol
C)	34.6 g/mol
D)	186 g/mol
E)	83.6 g/mol

Answer 1

Ana。。.) Guen Mi 12.3 M = 350. o me 2. 2

Answer 2

c is the correct option