What is the de Broglie wavelength of an oxygen molecule, O2 traveling at 521 m/s? Is the wavelength much smaller or much larger than the diameter of an atom. (on the order of 100 pm)

Question

How do I do this

Answer 1

de Broglie wavelength = h/mv
h = Planck's constant in J*s.
m is mass in kg.
v is velocity in m/s