The average kinetic energy of an ideal gas per molecule in SI unit at 25∘C will be:
KE = 3RT2N0 = 3 × 8.3143 × 2982 × 6.023 × 1023 = 6.17 × 10−21J
The average kinetic energy of a gas molecule at 27∘ is 6.21×10−21J. The average kinetic energy at 227∘ will be