A Container having $1$ mole of a gas at a temperature $27°C$ has a movable piston which maintains at constant pressure in container of $1 \,atm.$ The gas is compressed until temperature becomes $127°C$. The work done is ........ $J$ ($C_P$ for gas is $7.03\, cal/mol-K)$
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(b) At constant pressure
$W = P\Delta V = \mu R\Delta T$$ = 1 \times 8.31 \times 100$$ = 831 \approx 814J$
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