Four identical 1.0-L flasks contain the gases He, Cl2, CH4, and NH3, each at 0°C and 1 atm pressure.
-For which gas do the molecules have the smallest average kinetic energy?
A) He
B) CH4
C) NH3
D) Cl2
E) The molecules of all the gases have the same average kinetic energy.
Correct Answer:
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