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Q.
The number of sulphur atoms present in $0.1$ mole of $S_{8}$ molecules is_______ $\times 10^{23}$.
Some Basic Concepts of Chemistry
Solution:
Total number of atoms in a given amount of substance $= N _{ A } \times n \times$ Atomicity
Number of S atoms $=6.022 \times 10^{23} \times 0.1 \times 8$
$\approx 4.82 \times 10^{23}$