Question

Calculate the mass of 1 molecule of O2(oxygen)

Answer 1

1 mole of oxygen molecules = 32 g of oxygen = 6.022 X 1023 molecules
6.022 X 1023 molecules of O2 weigh 32 g.
1 molecule of O2 weigh = 32 / 6.022 X 1023
= 5.313 x 10−23 g