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22 September, 14:34

Determine the volume occupied by 2.5 mol of a gas at 18 °C if the pressure is 81.8 kPa?

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  1. 22 September, 14:50
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    74 litre

    Explanation:

    using ideal gas eqation PV=nRT

    here P (pressure) = 81.8 kPa = 81.8*10^3 Pa

    moles=2.5

    temperature=273.15+18=291.15K

    Gas constant R=8.314m^3-Pa/K-mol

    now, V=nRT/P = 8.314*2.5*291.5/81.8*10^3 ≈74litre

    ✌️; )
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