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5 November, 23:27

A sample of oxygen gas (O2) at STP has a mass of 48.0 grams. What is the volume of the gas?

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  1. 6 November, 01:02
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    P * V = n R T

    1 * 2.50 = n * 0.082 * 273 = 2. 50 / (0.082 * 273) = 0.11 mol

    mass = mole number * molecular mass

    mass = 0.11 * (16 * 2) = 3.52 g
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