Question

the kinetic energy per olecule of a gas at temperature T is

Answer 1

Answer :  K.E =3/2kt
We know, kinetic energy of any Gaseous molecule spends upon the temperature , and the value is K.E = 3/2 kT Where k is boltzmann constant.e.g., k = 1.38 × 10⁻²³ and T is temperature. 
In ideal gases, as you know, there is no any attraction between two molecule and negligible volume of molecule . when molecule translate in system of temperature T then, kinetic energy of one molecule is equal to
3/2kT
==============================================

Hope my answer helped … ☺