Question

Calculate number of moles and paeticles of the 108 g of o2

Answer 1

Multiply Moles by the Avogadro Constant
Multiply the number of moles by the Avogadro constant, 6.022 x 10^23, to calculate the number of molecules in your sample. In the example, the number of molecules of Na2SO4 is 0.141 x 6.022 x 10^23, or 8.491 x 10^22 molecules of Na2SO4.

Answer 2

Molar mass of O2=32g
Number of moles =given mass/molecular mass
So,
No of moles =108/32=3.33

No of particals = no of moles/Avagodro constant

No of particals =3.33/6.023