A gas mixture contains 1.29 g N2 and 0.90 g O2 in a 1.60-L container at 18 ∘C. Calculate the mole fraction of N2. Express your answer to three significant figures.
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Step 1
To convert the mass of each gas to moles, use the molar mass of each gas. The molar mass of nitrogen (N2) is approximately 28.02 g/mol, and the molar mass of oxygen (O2) is approximately 32.00 g/mol. For nitrogen (N2): Number of moles of N2 = mass of N2 / molar Show more…
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