A ventilated high-temperature materials testing chamber of constant volume 12.0 m³ contains helium gas, which behaves as a monatomic ideal gas. Because the chamber is vented to the outside atmosphere, the pressure of the helium inside always remains constant at a local atmospheric pressure of 1.02 × 10⁵ Pa. During an experiment, the temperature of the helium gas in the chamber is raised from 295 K to 475 K.

Show that the total internal energy of the helium gas remaining inside the chamber is the same at all temperatures. Support your answer with:

A calculations-based proof that determines this constant internal energy value (assuming a monatomic ideal gas where the internal energy of $N\,$ atoms is $U=32NkT\displaystyle U = \frac{3}{2}NkT$ ).
A physical explanation of this result in terms of the kinetic theory of gases and the movement of helium atoms.

Show that the total internal energy of the helium gas remaining inside the chamber is the same at all temperatures. Support your answer with:

A calculations-based proof that determines this constant internal energy value (assuming a monatomic ideal gas where the internal energy of $N\,$ atoms is $U=32NkT\displaystyle U = \frac{3}{2}NkT$ ).
A physical explanation of this result in terms of the kinetic theory of gases and the movement of helium atoms.

Thermal physics

Question 4

Markscheme

Thermal physics

Question 4

Markscheme

Thermal physics

Question 4

Thermal physics Questions

Thermal physics

Question 4

Thermal physics Questions