# Number of atoms present in 64 gm of SO2 moleculeâ€‹ is?

Given mass = 64 gm

Molecular mass of SO2 = 32+(16×2) = 64 gm

No. of moles = given mass/ molar mass = 64gm/ 64 gm = 1

Now, we get 64 gm of SO2 have 1 mole of SO2 molecules. Also 1 molecule of SO2 consists of 3 atoms ( 1 of Sulphur and 2 of oxygen).

So, 1 mole of SO2 = 6.023× 10^23 molecules of SO2 = 3× (6.023× 10^23) atoms = 18.069× 10^23 atoms.

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