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SAQ : What is the number of molecules of sulphur (S) present in 24 g of solid sulphur?

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What is the number of molecules of sulphur (S) present in 24 g of solid sulphur?

Answer

The atomic mass of sulphur (S) = 32 g

Molar mass of S​​​​​​8 = 32×8 = 256 g

256 g of S​​​​​​8 = 1 mole

∴ 24 g of S​​​​​​8 = 24\over256 = 0.09375 mole

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