Chemistry

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A 23 L flask at 254 K and 19 Torr contains nitrogen. What mass of nitrogen is present? Answer in units of g.

  • Chemistry -

    Use PV = nRT and solve for n. Then
    n = grams/molar mass. Solve for grams.

  • Chemistry -

    .2757g

  • Chemistry -

    I don't get that.
    PV = nRT so
    n = PV/RT
    P = 19/760
    V = 23
    R = 0.08206
    T = 254
    and I find about 0.027 but you need to do it more accurately.
    Then n = grams/molar mass
    so grams = n from above x about 28 = about 0.8 gram.

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