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28 June, 05:27

If a nitrogen gas sample occupies a volume of 2.55 l at 22.0 °c and 0.860 atm, what is the mass of the n2 gas? (r = 0.0821 atm•l/mol•k

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  1. 28 June, 08:45
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    number of moles of gas = PV / RT = 0.860 x 2.55 / 0.821 x (22+273)

    = 0.009054687 moles

    Molar mass of N2 = 28g so we have 0.009054687 moles x 28g / mol = 0.253 g of N2
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