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19 May, 18:22

Find the temperature (°C) of 1.25 moles of a gas if the gas has a volume 20.0 liters at a pressure of

1.75 atm.

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  1. 19 May, 21:47
    0
    T = 66.66 °C

    Explanation:

    Given dа ta:

    Moles of gas = 1.25 mol

    Volume of gas = 20.0 L

    Pressure of gas = 1.75 atm.

    Temperature of gas = ?

    Solution:

    PV = nRT

    T = PV / nR

    T = 1.75 atm * 20 L / 1.25 mol * 0.0821 atm. L. mol⁻¹. K⁻¹

    T = 35 atm. L / 0.103 atm. L. K⁻¹

    T = 339.81 K

    T = 339.81 K - 273.15 = 66.66 °C
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