Calculate the mean kinetic energy of the molecules of an ideal gas at temperature: 1000 ° C”

Answer 1

°the mean kinetic energy per molecule is , where is the Boltzmann constant and T is the absolute temperature.

So at 1000°C, the T = 1273.15 K, k_B=1.38 × 10^-23, therefore the mean kinetic energy is 2.635 × 10^-20 J.

Answer 2

The mean temperature of an ideal gas is related to the kinetic energy via E=3/2* k*T, where k is the Boltzmann constant (1.38*10^-23 J/K) and T is the Kelvin temperature equal to 273.15+ Celsius temperature.

Feed this through the formula and get 1.5*1.38*10^-23*(1273.15)=2.635*10^-20 J.