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Chemistry

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If a nitrogen gas sample occupies a volume of 2.55 L at 22.0 degrees Celsius and 0.860 atm, what is the mass of the N2 gas?

  • Chemistry - ,

    Use PV = nRT and solve for n = number of moles.
    Then n = grams/molar mass and solve for grams. You know the molar mass N2 = about 28

  • Chemistry - ,

    PV=nRT
    n=PV/RT
    n=0.860*2.55/0.08206*(22.0+273.15)
    n=2.19/24.2
    n=0.0906 mole


    0.0906molN*28.00g N/1 mole N
    N=2.54g of N2

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