Question

which has more number of atoms 100 gram of sodium or hundred gram of iron​

Answer 1

Na formula mass=23g

23g = avogadro number of molecules=6.022*10^23 atoms

100g = 6.022*10^23/.23 atoms

fe formula mass=56g

56g = 6.022*10^23

100g = 100g = 6.022*10^23/.56 atoms

now,

6.022*10^23/.23 atoms>6.022*10^23/.56 atoms

so,

100 g of sodium contains more atoms