Energy transferred into an ideal gas as heat:
A)goes entirely into the internal energy of the gas
B)goes entirely into doing work to expand the gas
C)goes entirely into the internal energy of the gas only if the pressure is constant
D)goes entirely into the internal energy of the gas only if the temperature is constant
E)goes entirely into the internal energy of the gas only if the volume is constant

Question

Quizplus · Accepted Answer

Energy transferred into an ideal gas as heat goes entirely into the internal energy of the gas only if the volume is constant. This is because, under constant volume, the gas does not do work (since work done by a gas is given by PΔV, and ΔV = 0), and thus all the heat energy goes into increasing the internal energy according to the first law of thermodynamics.

Energy Transferred into an Ideal Gas as Heat