o. of sulphur atoms present in one mole of  Sa  :

To determine the number of sulfur atoms present in one mole of Sa, we need to know the molar mass of Sa and the atomic mass of sulfur.

1. Find the molar mass of Sa:

   • Look up the atomic mass of Sa in the periodic table.
   • Multiply the atomic mass of Sa by the number of atoms of Sa in one mole (Avogadro's number, approximately 6.022 x 10^23).

2. Find the atomic mass of sulfur:

   • Look up the atomic mass of sulfur in the periodic table.

3. Calculate the number of sulfur atoms in one mole of Sa:

   • Divide the molar mass of Sa by the atomic mass of sulfur.

The result will give you the number of sulfur atoms present in one mole of Sa.