The Average Kinetic Energy of a Nitrogen Molecule at Room

The average kinetic energy of a nitrogen molecule at room temperature (20°C) is

A) 2 × 10−²¹ J.
B) 4 × 10−²¹ J.
C) 6 × 10−²¹ J.
D) 8 × 10−²¹ J.
E) 1 × 10−²⁰ J.