# A gaseous mixture contains 421.0 Torr H2(g), 376.1 Torr N2(g), and 84.7 Torr Ar(g). Calculate the mole fraction, χ, of each of these gases.?

χH2

xN2

xAr

### 1 Answer

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- Roger the MoleLv 72 months ago
421.0 Torr + 376.1 Torr + 84.7 Torr = 881.8 Torr total

The number of moles of each gas is directly proportional to its partial pressure.

χH2 = (421.0 Torr) / (881.8 Torr) = 0.4774xN2 = (376.1 Torr) / (881.8 Torr) = 0.4265xAr = (84.7 Torr) / (881.8 Torr) = 0.09605

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