When an ideal gas undergoes unrestrained expansion, no cooling occurs because the molecules
A. are above inversion temperature
B. exert no attractive forces on each other
C. do work equal to the loss in kinetic energy
D. collide without loss of energy
Answer:B
When an ideal gas undergoes unrestrained expansion, no cooling occurs because the molecules
A. are above inversion temperature B. exert no attractive forces on each other C. do work equal to the loss in kinetic energy D. collide without loss of energy