This is an incomplete question, here is a complete question.
Which of the three gases will have the highest average kinetic energy at a given temperature?
A) HBr
B) NO₂
C) C₂H₆
Answer : All three gases will have the same average kinetic energy at a given temperature.
Explanation :
The formula for average kinetic energy is:
[tex]K.E=\frac{3}{2}kT[/tex]
where,
K.E = average kinetic energy
k = Boltzmann’s constant
T = temperature
As we know that, average kinetic energy depends only on the temperature.
As the temperature of the all three gases are same. So, the all three gases will have the same average kinetic energy.