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.
d
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