Question

Chemistry check please... Thank you!
1. The partial pressure of oxygen at 310 K in one lung (3.0 L) is 21.3 kPa. How many moles of oxygen are in that lung?
0.025
2. You collect hydrogen gas over water at 323 K. The partial pressure of hydrogen is 122.4, and the total pressure is 134.7 kPa. What is the pressure of the water vapor?
12.3 kPa
3. Trimix 10/50 is a gas mixture that contains 10% oxygen and 50% helium, and the rest is nitrogen. If a tank of Trimix 10/50 has a total pressure of 2.07 × 104 kPa, then what is the partial pressure of oxygen?
2.07 * 103 kPa

Answer 1

Correct again.

Answer 2

Thank you so much!!