Answer:
v = 483.1 ms⁻¹
Explanation:
Kinetic energy is the energy possessed by a moving object solely due to its motion.
You can get the K.E. of an object using the equation,
K.E. = (1/2)mv²
So you get, for molecule,
K.E. = 6.21 X 10^-21 = (1/2)×5.32 X 10^-26×v²
we get, v = 48.31 ms⁻¹