Question

Plzz answer fast
How many atoms and molecules are present in 64.0gm of sulphur.

Answer 1

64g of S
Molecular Mass of Sulphur = 32g/mol 

64g of S/ 32 g/mol  = 2 mol 

1 mol = 6.022 x 1023 atoms

2 mol  *  6.022 x 1023

         =1.2044 x 1024 atoms of S

1 molecule of S = 8 atoms

1.2044 x 1024 /8 = 1.5055 x 1023 molecules of S

Answer 2

Number of atomsof sulphur (S8) = 8 x 1.50 × 1023 molecules = 1.20× 1023 atoms.