Author Question: An ideal gas is kept in a rigid container. When its temperature is 100 K, the mean-free-path of the ... (Read 171 times)

scienceeasy · **on:** Jul 29, 2018

An ideal gas is kept in a rigid container. When its temperature is 100 K, the mean-free-path of the gas molecules is . What will be the mean-free-path of the molecules at 400 K?

A) 4
B) 2
C)
D) /2
E) /4

Question 2

A container is filled with a mixture of helium (light molecules) and oxygen (heavy molecules) gases. A thermometer in the reads 22C. Which gas molecules have the greater average speed?

A) It is the same for both of the gases because the temperatures are the same.
B) The oxygen molecules do because they are diatomic.
C) The oxygen molecules do because they are more massive.
D) The helium molecules do because they are less massive.
E) The helium molecules do because they are monatomic.