A container having a volume of 1.0 m3 holds 5.0 moles of helium gas at 50C. If the helium behaves like an ideal gas, the average kinetic energy per molecule

A container having a volume of 1.0 m3 holds 5.0 moles of helium gas at 50C. If the helium behaves like an ideal gas, the average kinetic energy per molecule is:
A)6.7  1020 J.
B)1.0  1021 J.
C)1.0  1020 J.
D)6.7  1021 J.
E)1.3  1020 J.