Question

Calculate the temperature ? of a sample of gas when the average translational kinetic energy of a molecule in the sample is 8.15×10−21 J.

?= ________K

What is the total translational kinetic energy ?trans of all the molecules of this sample when it contains 2.15 moles of gas?

?trans= ________J

A cylinder which is in a horizontal position contains an unknown noble gas at 54700 Pa and is sealed with a massless piston. The piston is slowly, isobarically moved inward 0.215 m , while 19500 J of heat is removed from the gas. If the piston has a radius of 0.305 m , calculate the change in internal energy Δ? of the system.

Δ? =______J

Answer 1