Question 7
Gas LawsThe partial pressure of oxygen in a sample of air is 452 mm Hg and the total pressure is 780 mm Hg. What is the mole fraction of oxygen?
- A.0.203
- B.0.579
- C.2.030
- D.5.790
Show the answer and explanation
Answer: B (0.579)
Explanation
Mole fraction = partial pressure ÷ total pressure = 452 ÷ 780 = 0.579.