Question

calculate the no of atoms of each element present in 9.8 g of H2SO4

Answer 1

Given Mass=9.8g

Molar Mass (H2SO4)=98g

No. of moles=9.8/98=0.1

No. of molecules of H2SO4=0.1NA molecules

No. of H atoms in 1 Molecule of H2SO4=2

No. of S atoms in 1 Molecule of H2SO4=1

No. of O atoms in 1 Molecule of H2SO4=4

No. of atoms of H=2*0.1*NA=0.2NA

No. of atoms of S=0.1NA

where NA IS the Avogadro no.