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11 August, 17:02

What temperature does a 0.25 L cylinder containing 0.10 mol of helium gas need to be cooled in order for the pressure to be 253.25 kPa? (Given: R = 8.314 L∙kPa/K∙mol

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  1. 11 August, 17:10
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    On this item we will use the formula of the ideal gas law which is:

    PV = nRT

    P = 253.25 kPa

    V = 0.25 L

    n = 0.10 mol

    R = 8.314 kPaLmol^-1K^-1

    T = temp in Kelvin = ? K

    Work out for T

    T = PV / nR

    = 253.25 kPa x 0.25 L / 0.10 mol x 8.314kPaLmol^-1K^-1

    Temperature = 76.15 K
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