Question
help w 19
Blackboard 0 e do nothing because the two are equal d subtract atmospheric pressure e add atmosphenc pressure QUESTION 19 in an ad abatic process involving a gas a1he energy absorbed by heating equab the work done by the ent on the system o b the work done on the system by the en iro ment equas the change in internal energy t the energy absorbed by heating equals the change in iternal energy d the work done by the system on the environment equals the change in intemal anergy e he energy absorbed by heating equals the work done by the system on its environment QUESTION 20 A gas is changad slowly from state A to state B During this process no work is done on or by the gas This process must Be b adiabatic
Explanation / Answer
for the adiabatic process heat transfer (Q) is zero.
delta U = Q - W
delta U = - W
so the work done by the system equals the change in internal energy
Answer is d.
