Applying 1st law of thermodynamics: Q = Delta U + WB WB is the workdone by the system <span>WB = 346 J </span> As, <span>Delta U = ( m ) ( CV ) ( T2 - T1 ) </span>
<span>CV = ( Delta U ) / ( m ) ( T2 - T1 ) </span>Putting the values in equation:
<span>CV = ( 8485 J ) / ( 80.0 g ) ( 225 C - 25 C ) </span>
<span>CV = 0.5303 J / g - C degree </span> Now putting in original equation: <span>Q = Delta U + WB </span>
<span>Q = ( 8485 ) + ( 346 ) = 8831 J 8831J is the specific heat of the gas</span>