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The molecular formula of sulphur is given to be S8. It contains 8 atoms of sulphur.
The molecular mass of sulphur molecule = 32 x 8 = 256u.
Therefore, 1 mole of sulphur molecules = 256 g
Now, 256g of sulphur = 1 mole of sulphur molecules
Hence, 16g of sulphur = 16/256 mole of sulphur molecules = 0.0625 moles of Sulphur molecules
Also, 1 mole of sulphur molecules = 6.023 x 1023 molecules
0.0625 mole of sulphur molecules = 6.023 x 1023 x 0.0625 molecules = 3.76 x 1022 molecules
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