which of the following has the largest nos of oxygen atom.

1- 1 gm of oxygen atom
2- 1 gm o^2
3- 1 gm of ozone

1. (1/16)*6.02E23 = ?

2. (1/32)*6.o2E23*(2 atoms O/molecule O2) = ?
3. (1/48)*6.02E23*(3 atoms o/molecule O3) = ?