States of Matter - Result Question 20
####20. Which of the following expressions correctly represents the relationship between the average molar kinetic energy, $KE$, of $CO$ and $N_2$ molecules at the same temperature?
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(a) $KE _{CO}<KE _{N_2}$
(b) $KE _{CO}>KE _{N_2}$
(c) $KE _{CO}=KE _{N_2}$
(d) cannot be predicted unless volumes of the gases are given
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Solution:
- (c) Average molar kinetic energy $=\frac{3}{2} k T$
As temperature is same hence average kinetic energy of $CO$ and $N_2$ will be same.
