If heat content of \( \mathrm{X} \) is smaller than that of \( \mathrm{Y} \) then the process \(...

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If heat content of \( \mathrm{X} \) is smaller than that of \( \mathrm{Y} \) then the process \( \mathrm{X} \rightarrow \mathrm{Y} \) is
\( P \)
W.
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