Doubling the Kelvin temperature of a gas increases which of the following measures of its molecular velocity by a factor of 1.4?
A)the rms speed
B)the average speed
C)the most probable speed
D)All three of these speeds are correct.
E)None of these is correct.

Question

Quizplus · Accepted Answer

The root-mean-square (rms) speed, average speed, and most probable speed of molecules in a gas are all directly proportional to the square root of the temperature in Kelvin. Therefore, doubling the Kelvin temperature increases each of these speeds by a factor of the square root of 2, which is approximately 1.4.

Doubling the Kelvin Temperature of a Gas Increases Which of the Following