The Most Probable Speed of an Oxygen Molecule in the Gas

Multiple Choice

The most probable speed of an oxygen molecule in the gas phase at room temperature is 450 m/s. The root-mean-square speed (u_rms) is therefore

A) equal to 450 m/s.
B) slightly less than 450 m/s.
C) much less than 450 m/s.
D) slightly greater than 450 m/s.
E) much greater than 450 m/s.