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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class11  >>  Kinetic Theory of Gases
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The average translational kinetic enegry of Oxygen molecules (molecular weight of $O_2$ is 32) at a particlular temperature is 0.032eV. What is the average translational kinetic energy of $N_2$ molecules (molecular weight is 28) at the same temperature>

(A) 0.028 eV (B) 0.038 eV (C) 0.032 eV (D) 0.024 eV
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The average translational kinetic energy does not depend on the molecular weight of the gas. It is always $\large\frac{3}{2}$kT for all gases. Therefore, the answer is 0.032eV.
answered Jan 28, 2014 by balaji.thirumalai

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