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1 July, 01:11

What is the volume of 5.60 g of o2 at 7.78 atm and 415k?

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Answers (1)
  1. 1 July, 03:06
    0
    0.765 dm³

    Explanation:

    Applying genera gas equation,

    PV = nRT ... Equation 1

    Where P = pressure of the oxygen gas, V = Volume of the oxygen gas, n = number of mole of oxygen gas, T = Temperature of oxygen gas, R = Molar gas constant.

    Make V the subject of the equation

    V = nRT/P ... Equation 2

    But,

    n = mass/molar mass

    n = 5.6 / (16*2)

    n = 5.6/32

    n = 0.175 moles.

    Given: T = 415 K, P = 7.78 atm, n = 0.175 moles

    Constant: R = 0.082 atm. dm³/K. mol

    Substitute into equation 2

    V = 0.175 (0.082) (415) / 7.78

    V = 5.95525/7.78

    V = 0.765 dm³
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