The number of gram atoms of sulphur present in 3 mole of hydrogen sulphide is

One mole of H₂S has a mass of 32 g and mass present in 3 moles of H₂S is 102.

$$\begin{gathered} 1 \mathrm{mole}=34 \mathrm{g} \\ 3 \mathrm{mole}=34\times 3=102 \mathrm{g} \end{gathered}$$

Number of gram atoms of S present in 3 moles of H₂S is:

$\frac{102}{32}=3$