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16 June, 12:00

A tank contains 135 moles of the monatomic gas argon at a temperature of 15.3 °c. how much energy must be added to the gas to increase its temperature to 45.0 °c?

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  1. 16 June, 12:25
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    To calculate the energy required, we will use the following rule:

    Q = (3/2) * n*R*ΔT

    where:

    Q is the amount of energy that we need to calculate

    n is the number of moles = 135 moles

    R is the gas constant = 8.314

    ΔT is the change in temperature = 45 - 15.3 = 29.7 degrees kelvin

    Substitute with the givens in the above equation to get the energy as follows:

    Q = (3/2) * 135 * 8.314 * 29.7 = 50.00247 * 10^3 Joules
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