[VISUAL] The volume of a sample of air in a cylinder with a movable piston is 2.0 L at a pressure P1 — States of Matter Chemistry Question
Question
[VISUAL]
The volume of a sample of air in a cylinder with a movable piston is 2.0 L at a pressure P1, as shown in the diagram above. The volume is increased to 5.0 L as the temperature is held constant. The pressure of the air in the cylinder is now P2. What effect do the volume and pressure changes have on the average kinetic energy of the molecules in the sample?
A.
The average kinetic energy increases.
B.
The average kinetic energy decreases.
C.✓ Correct
The average kinetic energy stays the same.
D.
It cannot be determined how the kinetic energy is affected without knowing P1 and P2.
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