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A mixture of gases contains 2.00 mol of O2, 3.00 mol of N2, and 5.00 mol of He. The total pressure of the mixture is 850 torr. What is the partial pressure of each gas?

  • Chemistry - ,

    PV = nRT
    V, R and T are constant
    in other words the pressure of each is proportional to n

    total moles = 2+3+5 = 10 mol

    P of O2 = 850 (2/10)
    P of N2 = 850 (3/10) etc

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