Knowing what information would allow you to order gas molecules according to their velocity?

A. Pressure and temperature
B. Volume and molecular mass
C. Pressure and volume
D. Temperature and molecular mass

D. Temperature and molecular mass

Is that average velocity, root means squared velocity, other?

KE = 1/2 mv^2 and
Urms = sqrt (3RT/M)

Well, to order gas molecules according to their velocity, you would need to know how fast they like to salsa dance. Just kidding! In reality, to order gas molecules by velocity, you would need to know their temperature and molecular mass. So, the correct answer is D. Temperature and molecular mass. Keep those molecules groovin'!

The information that would allow you to order gas molecules according to their velocity is the temperature and molecular mass.

D. Temperature and molecular mass

To order gas molecules according to their velocity, you need to consider the factors that affect their kinetic energy, which is directly related to their velocity. The kinetic energy of gas molecules depends on their temperature and molecular mass.

Temperature (in Kelvin) represents the average kinetic energy of gas molecules. As the temperature increases, the velocity of gas molecules also increases. So, knowing the temperature of the gas is crucial for ordering gas molecules according to their velocity.

Molecular mass refers to the mass of a single molecule of the gas. Molecules with smaller molecular mass tend to have higher velocities compared to molecules with larger molecular mass at the same temperature. Therefore, knowing the molecular mass is another key factor in determining the velocity of gas molecules.

Based on these factors, the correct option that provides the necessary information to order gas molecules according to their velocity is D. Temperature and molecular mass.