When 20 J of work was done on a gas, 40J of heat energy wasreleased. If the initial internal energy of the gas was 70J, what is the final internal energy?

When 20 J of work was done on a gas, 40J of heat energy wasreleased. I

1.	When 20 J of work was done on a gas, 40J of heat energy wasreleased. If the initial internal energy of the gas was 70J, what is the final internal energy?
Answer» 50J 60J 90J 110J Answer :A