Question

36.
A system undergoes a 3 - step process. In step 1, 25 J of work is done by the system as
its intemal energy (U) decreases by SOJ. In Step 2, W=-15J and q = +40J. In step 3
at constant volume, the system gives off 50J of heat to the surroundings. What is the net
internal energy change in J as a result of these three steps?
1) - 50
2) - 75
3) - 125
4) + 100
​

Answer 1

Answer:

ok I will solve this problem