If $R =$ universal gas constant, the amount of heat needed to raise the temperature of $2$ mole of an ideal monoatomic gas from $273K$ to $373K$ when no work is done ...... $R$
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(c) $\Delta Q = \Delta U + \Delta W$ $\Delta W = 0$==> $\Delta Q = \Delta U$$ = \frac{f}{2}\mu R\Delta T$
$ = \frac{3}{2} \times 2R(373 - 273)$ $= 300R.$
$ = \frac{3}{2} \times 2R(373 - 273)$ $= 300R.$
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