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

Question

If the heat of 110 J is added to a gaseous system, whose internal energy is 40 J , then the amount of external work done is: (A)  180 textJ  (B)  70 textJ  (C)  110 textJ  (D)  30 textJ

Tardigrade Admin · Accepted Answer

Heat added to the system Δ Q=110 J Internal energy Δ U=40 J External work done is given by Δ W=Δ Q-Δ U=110-40 = 70 J

Q. If the heat of $110 J$ is added to a gaseous system, whose internal energy is $40 J$ , then the amount of external work done is:

$180 J$

$70 J$

$110 J$

$30 J$

Heat added to the system $Δ Q = 110 J$
Internal energy $Δ U = 40 J$
External work done is given by
$Δ W = Δ Q - Δ U = 110 - 40$
$= 70 J$

Q. If the heat of 110J is added to a gaseous system, whose internal energy is 40J , then the amount of external work done is:

180J

70J

110J

30J