Which of the following changes will not affect the total pressure of gas in a container, assuming all other factors remain constant?
A)The frequency of collisions of molecules with the walls is increased.
B)The average velocity of the molecules is lowered.
C)The temperature of the sample is altered.
D)Half of the molecules are replaced by an equal number of molecules of a gas with a different molecular weight.
E)The total number of molecules is altered.

Question

Quizplus · Accepted Answer

The total pressure of a gas in a container is determined by the number of collisions of gas molecules with the walls of the container, their speed, and the temperature of the gas. Changing the type of molecules without changing their number, temperature, or energy does not affect the total pressure, as pressure is a result of the collective behavior of gas molecules, not their individual identities.

Which of the Following Changes Will Not Affect the Total