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Calculate the total change of entropy for an ideal monatomic gas expanding from a volume V...

Calculate the total change of entropy for an ideal monatomic gas expanding from a volume V into a volume 2V via: i) Free expansion ii) Quasi-static isothermal expansion iii) Quasi-static adiabatic expansion; iv) Do the results of (iii) surprise you? Comment on what these results mean in terms of reversible and irreversible processes.

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