Which statement about the internal energy, U, of a system is correct?
Correct answer C. It is the total kinetic and potential energy of its particles, and only changes in it can be measured
Explanation
Internal energy includes translational, rotational, vibrational and bonding energies of all particles. Its absolute value is unknown, but ΔU can be found from heat and work exchanged.
Answer checked How we write and check questions
Discussion