5.6 liter of helium gas at STP is adiaba...

5.6 liter of helium gas at STP is adiabatically compressed to 0.7 liter. Taking the initial temperature to be `T_1,` the work done in the process is

`(9)/(8)RT_(1)`

`(3)/(2)RT_(1)`

`(15)/(8)RT_(1)`

`(9)/(2)RT_(1)`

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