We’re being asked to calculate the mole fraction of N2 in a gas mixture containing CH4, N2, and O2.
Recall that the partial pressure of a gas (PGas) in a mixture is given by:
χGas = mole fraction of the gas
Ptotal = total pressure of the gas mixture
The partial pressures of CH4, N2, and O2 in a sample of gas were found to be 155 mmHg, 476 mmHg, and 669 mmHg, respectively. What is the mole fraction of nitrogen?
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