At constant volume, 200 J of heat is added to 2 moles of an ideal gas at 300 K. What is the change in internal energy?
Q1. At constant volume, 200 J of heat is added to 2 moles of an ideal gas at 300 K. What is the change in internal energy?
Answer: 200 J
Explanation: ΔU = Q at constant volume. Q = 200 J, so ΔU = 200 J. Other options misinterpret the first law of thermodynamics.