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10 litre of an ideal gas at 25 atm and 2...

10 litre of an ideal gas at 25 atm and `27^(@)C` is expanded isothermally to 1 atm against a constant external pressure of 760 torr. Calualate work done by the gas in litre-atm:

A

240

B

250

C

800

D

400

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The correct Answer is:
A
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