Molecular Speeds: at What Temperature Would the Root-Mean-Square Speed (Thermal

Multiple Choice

Molecular speeds: At what temperature would the root-mean-square speed (thermal speed) of oxygen molecules be 13.0 m/s? Assume that oxygen approximates an ideal gas. The mass of one O₂ molecule is 5.312 × 10^-26 kg. The Boltzmann constant is 1.38 × 10^-23 J/K.

A) 0.217 K
B) 1800 K
C) 5410 K
D) 0.0666 K