Question

What's the average kinetic energy per molecule in helium at 248 K?

What's the average kinetic energy per molecule in oxygen at 248 K?

Answer 1

Here, as the average kinetic energy of a molecule

Average kinetic energy = 1.5 * k * T

Average kinetic energy = 1.5 * 1.38 *10^-23 * 248

Average kinetic energy = 5.134 *10^-21 J

the Average kinetic energy is 5.134 *10^-21 J

for the oxygen molecule

as the average kinetic energy of a molecule

Average kinetic energy = 2.5 * k * T

Average kinetic energy = 2.5 * 1.38 *10^-23 * 248

Average kinetic energy = 8.56 *10^-21 J

the Average kinetic energy is 8.56 *10^-21 J