Question

the pressure exerted by an ideal gas is __________ of the kinetic energy of all the molecules contained in a unit volume of gas.

Answer 1

a gas, heat is nothing else than the kinetic or mechanical energy of motion of the gas molecules". B.L. Loeb, The Kinetic Theory of Gases (1927), p. 14

Answer 2

Answer :-

Kinetic energy of a gas due to translation per mole

E  = 3/2 P V

E  = 3/2 RT

here R - Universal gas constant

        T - Temperature of gas

E  = 3/2 P V

P = (2/3) (E/V) -- Relation between pressure & kinetic energy

The pressure exerted by an ideal gas is two-third of the kinetic energy of all the molecules contained in a unit volume of gas.