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31 May, 16:28

How many oxygen molecules are in 22.4 liters of oxygen gas at 273k and 101.3kpa?

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  1. 31 May, 18:43
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    How many oxygen molecules are in 22.4 liters of oxygen gas at 273k and 101.3kpa

    First solve the number of moles of the oxygen gas by using the ideal gas equation:

    PV = nRT

    Where n is the number of moles

    n = PV/RT

    n = (101 300 Pa) (22.4 L) (1 m3/1000 L) / (8.314 Pa m3 / mol K) (273 K)

    n = 1 mol O2

    the number of molecules can be solve using avogrados number 6.022x10^23 molecule / mole

    molecules of one mole O2 = 6.022x 10^23 molecules
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