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Q. Which of the following contains maximum number of atoms ?

Some Basic Concepts of Chemistry

Solution:

(A) Atoms in $2.0$ mol of $S_{8}=2\times8\times6.02\times10^{23}$
$=9.632 \times 10^{24}$
(B) Atoms in $6.0$ mol of $S$
$=6\times 6.02\times10^{23}=3.612\times10^{24}$
(C) Atoms in $5. 5$ mol of
$SO_{2}=3\times5.5\times6.12\times10^{23}=9.93\times10^{24}$
(D) Atoms in $4.48\,L$ of $CO_{2}$ at $S.T.P.$
$=\frac{3\times4.48\times6.02\times10^{23}}{22.4}$
$=4.816\times10^{23}$