Imagine you have two containers of gas, one labeled gas A and one labeled gas B. Gas A has an average speed of 700 m/s and gas B has an average speed of 1100 m/s. Both containers are being held at the same temperature. How could you match the average speeds of gas A and gas B?

A. Reduce the volumes of both containers.
B. Raise the temperature of gas B.
C. Lower the temperature of gas A.
D. Lower the temperature of gas B.

Explanation: The average speed of the gas is directly proportional to the temperature of the gas. Increasing the temperature increases the average speed and decreasing the temperature decreases the average speed.

[tex]v_{avg}=\sqrt\frac{8RT}{\pi M}[/tex]

R= gas constant

T= temperature of the gas

M= molecular mass

The average speed of gas A is 700 m/s and gas B has a average speed of 1100 m/s. Thus to match the average speed of both, the temperature of gas B is lowered such that the average speed also reduces.