A flask at room temperature contains exactly equal amounts (in moles) of nitrogen and xenon.

a. Which gas exerts the greater partial pressure?

b. The molecules or atoms of which gas have the greater average velocity?

c. The molecules of which gas have the greater average kinetic energy?

d. If a small hole were opened in the flask, which gas would effuse more quickly?

Calculate the root mean square velocity and kinetic energy of , , and at . Which gas has the greatest velocity? The greatest kinetic energy? The greatest effusion rate?

This graph shows the distribution of molecular velocities for two different molecules (A and B) at the same temperature. Which molecule has the higher molar mass? Which molecule would have the higher rate of effusion?