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2 moles of H e are mixed with 2 moles of...

2 moles of `H e` are mixed with 2 moles of `H_(2)` in a closed adiabatic container. Initially the mixture occupies 3 liters at `27overset(o) \C`. The volume is suddenly decreased to `(3 / 2)` liters. Find `gamma` for the mixture. `(H_2).` and He can be treted as ideal gases

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