The average translational kinetic energy of O2 (relative molar mass 32) molecules at a particular temperature is 0.048eV. The translational kinetic energy of N2 (relative molar mass 28) molecules in eV at that same temperature is?
The average translational kinetic energy of O2 (relative molar mass 32) molecules at a particular temperature is 0.048eV. The translational kinetic energy of N2 (relative molar mass 28) molecules in eV at that same temperature is?
Explanation
The average translational kinetic energy of a molecule is given by:
(3/2)kT = (3/2) × (1.38 × 10^-23 J/K) × T
Since the temperature is the same for both O2 and N2 molecules, the average translational kinetic energy will be the same:
0.048 eV = (3/2)kT
The mass of the molecule does not affect the average translational kinetic energy.
Therefore, the translational kinetic energy of N2 molecules at the same temperature is also:
0.048 eV