Question

How many atoms of sulphur are present in $0.2$ mole of sulphur $(S_8)$ molecule?

• A. $9.64\times 10^{23}$
• B. $96.4\times 10^{23}$
• C. $1.205\times 10^{23}$
• D. $12.05\times 10^{23}$

Answer 1

Answer: (A)

$1$ 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