110 joule of heat is added to a gaseous system whose internal energy is 40 J , then the amount of ex

Question

110 joule of heat is added to a gaseous system whose internal energy is 40 J , then the amount of external work done is\

Professor PC Thomas Classes · Answer

(b) : $\Delta Q=\Delta U+\Delta W$\ $\Rightarrow \Delta W=\Delta Q-\Delta U=110-40=70 \mathrm{~J}$\