Respuesta :

Manetho

Explanation:

Mass of oxygen given = 35.5 g

Molecular mass of oxygen = 32 g/mole.

No. of molecules of O_2 in 35.5 g of O_2

[tex]\frac{35.5}{32} \times 6.022\times10^{23}\\=6.68\times10^{23}[/tex]