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  4. How many atoms of sulphur are present in 0.2 mole of sulphur (S8) molecule?

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Q. How many atoms of sulphur are present in $0.2$ mole of sulphur $ (S_{8}) $ molecule?

J & K CETJ & K CET 2001

Solution:

$1$ mole sulphur $\left(S_{8}\right)=8$ mole atoms
$0.2$ mole sulphur $=8 \times 0.2=1.6$ mole atoms
$=1.6 \times 6.023 \times 10^{23}$ atoms
$=9.64 \times 10^{23}$ atoms