Calculate the number of molecules of sulphur (S8) present in 16 g of solid sulphur.

Answer :

1 mole of Sulphur (S₈)  = 8 × 32 g = 256 g
also as 1 mole = 6.022 × 10²³ in number of particles of that substance

So 256 g of  sulphur contains = 6.022 × 10²³  molecules of sulphur
Therefor 16 g of sulphur will contains = 3.76 × 10²²  molecules (approx)

This is an answered question from Chapter 3. Atoms And Molecules of CBSE Class 9th Science

Check for Complete Exercise Solution for Chapter 3. Atoms And Molecules | CBSE Class 9th Science