This is just a qualitative question but feel free to show an equation if possible. Basically if you have a container with a heating element, lets say 500 W with a temperature of 2500 Kelvins and inside this box is a low pressure ideal gas, something like 1/100 of an atmosphere. Also imagine that the walls of the container do not let heat escape. The question I have is what would be the final temperature of the low pressure gas (after a considerable time), higher than the temperature of the heating element at 2500 Kelvin or just the same. I'm assuming a Maxwell-Boltzmann distribution would describe the speeds of the particles and the temperature of a particle is (3/2)K_bT.