The molecular formula for element sulphur is S8 . In a sample of 5.12g of Sulphur :- a)How many moles of Sulphur are present , b) How many molecules and atoms are present ?
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Molecular weight of S8
= 32×8
= 256 g
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No. of moles
= Given weight in grams/molecular weight
= 5.12/256
= 0.02 moles
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No. of atoms or molecules
= No. of moles × N•
= 0.02 × 6.022 × 10^23
= 12.044×10^21 atoms
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= 32×8
= 256 g
__________________
No. of moles
= Given weight in grams/molecular weight
= 5.12/256
= 0.02 moles
__________________
No. of atoms or molecules
= No. of moles × N•
= 0.02 × 6.022 × 10^23
= 12.044×10^21 atoms
__________________
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