Question

how many atoms of oxygen are persent in 50g of caco3

Answer 1

Molar Mass of CaC${O_3}$ = ( 40 + 12 + 48 ) g = 100 g

1 atom of CaC${O_3}$ produced by 3 atoms of O

100 g of CaC${O_3}$ produced by 3 atoms of O

1 g of CaC${O_3}$ produced by 3 / 100 atoms of O

Now,

Atoms of Oxygen produced by 50 g of CaC${O_3}$ -

= ( 3 / 100 ) × 50 atoms

= 1.5 atoms of Oxygen

^^"