Question

Calculate the no. Of atoms in 0.20 mole if oxygen

Answer 1

Answer:

Explanation:∵ No. of molecules = moles × NA

∴ Moles = Molecules / NA

            = 0.20 / 6.02×10²³

            0.0332×10-²³

Now No. of atoms = moles × NA ×atomicity

                   

                            = 3.32×10  (power-25)×6.02×10²³ × 2

                            = 39.97 ×10 (power-2)