Most Probable Speed - Atoms From An Oven

AlephZero

In SI units:
K = 1.38e-23 J/K
m = mass of one molecule = 0.027/6.022e23 kg
T = 1173 K

... which gives a velocity of "hundreds of m/s" as you expected.

AlephZero $Math 2012$ Recognitions: Science Advisor	In SI units: K = 1.38e-23 J/K m = mass of one molecule = 0.027/6.022e23 kg T = 1173 K ... which gives a velocity of "hundreds of m/s" as you expected.