Calculate the number of moles of iron in a sample containing 10 22 atoms of iron

CBSE Class 9 CBSE Class 9 Science
1
  1. Calculate the number of moles of iron in a sample containing 10 22 atoms of iron.
  2. Calculate the number of moles in 71g of chlorine. [Atomic mass ofCl= 35.5 u]
2
  1. Number of moles of iron image image image
  2. Molecular mass of image
    Number of moles of Cl = image
    ∴ 71 g of Cl2 = 1 moj