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A gas with (c(p))/(c(V))=gamma goes from...

A gas with `(c_(p))/(c_(V))=gamma` goes from an intial state `(p_(1), V_(1), T_(1))` to a final state `(p_(2), V_(2), T_(2))` through an adiabatic process. The work done by the gas is

A

`(nR(T_(1)-T_(2)))/(gamma-1)`

B

`(p_(1)V_(1)-p_(2)V_(2))/(gamma-1)`

C

`(p_(1)V_(1)+p_(2)V_(2))/(gamma+1)`

D

`ngammaR(T_(1)-T_(2))`

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