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Potential energy of a molecule on the surface of a liquid

The same question, asked 2 times: 16 May 2023 S2, 14 May 2024 S1. Every wording below, oldest first.

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  1. Question 1

    16 May 2023 S2

    7
    On the surface of the liquid in equilibrium, molecules of the liquid possess

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  2. Question 2

    14 May 2024 S1

    6
    The potential energy of a molecule on the surface of a liquid compared to the molecules inside the liquid is

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