Answer: The units used to express average kinetic energy of a substance is Joules.
Explanation:
Average kinetic energy is defined as the average of the kinetic energies of all the particles present in a system.
To calculate the average kinetic energy of the atom, we use the equation:
[tex]K=\frac{3}{2}kT[/tex]
where,
K = average kinetic energy
k = Boltzmann constant = [tex]1.3807\times 10^{-23}J/K[/tex]
T = temperature (it is expressed in Kelvins)
So, the units of K will be:
[tex]\text{Average kinetic energy}=\frac{3}{2}\times (J/K)\times (K)\\\\\text{Average kinetic energy}=J[/tex]
Hence, the units used to express average kinetic energy of a substance is Joules.
