1.12 Dalton's Law of Partial Pressures (sem 2)

At a depth of 40 m, the water pressure is 500 kPa. A diver breathing air (78% N2, 21% O2) at this depth would have what partial pressure of oxygen in his lungs?

105 kPa

At 298 K, you collect 0.5 L of oxygen over water that has a total pressure of 150 kPa. What is the partial pressure of oxygen? (The partial pressure of water vapor at 298 K is 3.6 kPa.)

146.4 kPa

A tank of gas has partial pressures of nitrogen and oxygen equal to 1.61 × 104 kPa and 4.34 × 103 kPa, respectively. What is the total pressure of the tank? Remember that (1.0 × 105) + (1.0 × 105) = 2.0 × 105.

2.04 × 10^4 kPa

The total pressure of gases inside a vessel is 2.07 × 10^4 kPa. The partial pressure of oxygen in the tank is 8.27 × 10^3 kPa. What is the percentage of oxygen in the vessel?

40%

A mixture of Ar, He, and O2 has a total pressure of 1,015 kPa, and partial pressures of argon and helium of 152 kPa and 305 kPa, respectively. What is the partial pressure of oxygen in this mixture?

558 kPa