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18 September, 01:23

What is the total pressure in a 6.00-l flask which contains 0.127 mol of h2 (g) and 0.288 mol of n2 (g) at 20.0°c?

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  1. 18 September, 01:37
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    Answer: 1.66 atm

    dа ta:

    P = ?

    V = 6.00 liter

    n1 = 0.127 mol of H2 (g)

    n2 = 0.288 mol of N2 (g)

    T = 20.0°C

    Formula:

    PV = n RT

    Solution:

    1) Conversion of units:

    = 20 + 273.15 K = 293.15 K

    2) n = n1 + n2 = 0.127 mol + 0.288 mol = 0.415 mol

    3) PV = nRT = > P = nRT / V

    R = 0.0821 atm*liter / (K*mol)

    P = 0.415 mol * 0.0821 atm * liter / (K*mol) * 293.15 K / 6 liter = 1.66 atm

    Answer: 1.66 atm
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