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10. Calculate the number of molecules …

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10. Calculate the number of molecules of sulphur (S8) present in16 g of solid sulphur.

Posted by Shreyas Daundkar 3 years, 8 months ago

CBSE > Class 09 > Science

1 answers

Shreyas Daundkar 3 years, 8 months ago

Ans. 1mol of S8 = molecular mass of S8 = 32 x 8 = 256u=256g since 256g of S8= 1mol = 6.022 x 1023 atoms (Avogadro number) 16g of S8= 16x6.022 x 1023/256 = 3.76x1022 molecules.

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CBSE > Class 09 > Science