Answer
$7.462\times10^{23}\ atoms\ S $
Work Step by Step
1.Use the molar mass of sulfur and Avogadro's number as conversion factors in order to determine the number of atoms of sulfur.
2. $39.733 g\ S \times\frac{1\ mol\ S}{32.065\ g\ S}\times\frac{6.022\times10^{23}}{1\ mol\ S}= 7.462\times10^{23}\ atoms\ S $