How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen

The number of molecules in 1 mol of oxygen are equal to the number of molecules in 1 mol of nitrogen.

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number of particles.

1 mole of oxygen contains =

molecules of oxygen

1 mole of nitrogen contains =  molecules of nitrogen

Thus number of molecules in 1 mol of oxygen are equal to the number of molecules in 1 mol of nitrogen.