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R/Cv = 0.4 for a gas: what kind of molecules make up the gas

The same question, asked 3 times: 10 May 2023 S2, 11 May 2024 S2, 11 Apr 2026 S2. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    10 May 2023 S2

    19
    For a gas, RCv=0.4\frac{R}{C_v} = 0.4 where R is the universal gas constant and 'CvC_v' is molar specific heat at constant volume. The gas is made up of molecules which are

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  2. Question 2

    11 May 2024 S2

    23
    For a gas, RCv=0.4\frac{R}{C_v} = 0.4, where R is universal gas constant and CvC_v is molar specific heat at constant volume. The gas is made up of molecules which are

    Tap an option to check your answer.

  3. Question 3

    11 Apr 2026 S2

    117
    For a gas, RCv=0.4\dfrac{R}{C_v} = 0.4 where R is the universal gas constant and CvC_v is the molar specific heat at constant volume. The gas is made up of molecules which are

    Tap an option to check your answer.