Question

What will be the wavelength of oxygen molecule in picometers moving with a velocity of 660 m/s?

Answer 1

This means the mass of 1 mol or 6.023×1023 6.023 × 10 23 molecule of oxygen is 32 g. Thus we have the mass of 1 molecule is m=326.023×1023 g=5.3×10−26 kg m = 32 6.023 × 10 23 g = 5.3 × 10 − 26 k g . This fast-moving molecule will create a wavelength that will be given by the de Broglie equation.