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when a balloon kept in an evacuated room is punctured and the ideal gas in the balloon goes on to fill the entire room,does the gas perform any work in this expansion, and is there in any change in internal energy of the gas?what is the change in enthalpy?please give mathematical explanation too.

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If the balloon delivers no energy after being punctured, the gas gains or looses no energy from before the puncture to after filling the entire room, as it didn't work to push something away, it simply goes through the hole.

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