試題詳解

12. The partial pressures of CH₄, N₂, and O₂ in a sample of gas were found to be 135 mmHg, 508 mmHg, and 571 mmHg, respectively. Calculate the mole fraction of nitrogen.
(A) 20.4
(B) 0.470
(C) 0.418
(D) 0.751