A sample consisting of 1.00mol Ar is expanded isothermally at 20 C from 10.0dm 3 to 30.0dm

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A sample consisting of 1.00mol Ar is expanded isothermally at 20 °C from 10.0dm3 to 30.0dm(i) Reversibly, (ii) Against a constant external pressure equal to the final pressure of the gas, (iii) Freely (against zero external pressure). For the three processes calculate q, w, and ΔU.

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