Question 682: Thermodynamics & KTG

Question

The absolute temperature of a gas is determined by

Accepted Answer

In the kinetic theory of gases, the absolute temperature $T$ is proportional to the
average (or mean) kinetic energy of the gas molecules
, which in turn is proportional to the
mean square velocity
of the molecules. Symbolically,
$ \frac{3}{2} k_B T \;=\; \frac{1}{2} m \langle v^2 \rangle, $
where $k_B$ is BoltzmannÃ¢ÂÂs constant, $m$ is the mass of a molecule, and $\langle v^2 \rangle$ is the mean of the square of the molecular speeds.
Therefore, among the given options, the correct statement is that
the absolute temperature of a gas is determined by the mean square velocity of its molecules
.
Answer: (D) the mean square velocity of the molecules.

Answer

the average momentum of the molecule.

Answer

the velocity of sound in the gas.

Answer

the number of molecules in the gas.

Answer

the mean square velocity of the molecules.

Thermodynamics & KTG

The absolute temperature of a gas is determined by

Choose the correct answer: