During an isothermal process, 5.0 J of heat is removed from an ideal gas. What is the change in internal (thermal) energy of the gas? A) 0.00 J B) 2.5 J C) 5.0 J D) 7.5 J E) 10 J

option (a)

Explanation:

In an isothermal process, the temperature of the gas remains constant.

The internal energy of the gas is the function of change in temperature.

As the temperature is constant, so there is no change in the internal energy of the gas.

So, internal energy change is zero.