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Which gas of equal mass does the most work in reversible isothermal expansion

The same question, asked 2 times: 9 May 2023 S2*, 12 May 2024 S2. Every wording below, oldest first.

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  1. Question 1

    9 May 2023 S2

    57
    10 g each of NH3_3, N2_2, Cl2_2 and H2_2S are expanded isothermally and reversibly at same temperature. Identify gas that performs maximum work.

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  2. Question 2

    12 May 2024 S2

    88
    Equal masses in grams of H2,N2,Cl2H_2, N_2, Cl_2 and O2O_2 are enclosed in cylinders separately. If these gases expand isothermally and reversibly by 1010 dm³ at 300 K, the work done by gas is maximum for

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