Question

Which of the following contains maximum number of atoms ?

• A. 2.0 mol of $S_8$
• B. 6.0 mol of S
• C. 5.5 mol of $SO_2$
• D. 44.8 L of $CO_2$ at S.T.P

Answer 1

Answer: (C)

5.5 mol of $SO_2$

Answer 2

(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 $S.T.P.$ $=\frac{3\times4.48\times6.02\times10^{23}}{22.4}$ $=4.816\times10^{23}$