Mole vs Avogadro's No.

    Mole vs Avogadro's No.

Mole and Avogadro's No. are practically the same but differ in definition only.

Mole: The No. of particles in one gram atom or gram molecule of a substance is called a mole.

  Avogadro's No: The No. of particles in one mole of substance is 6.02×10^23 and this No. is called Avogadro's No.

    Numbers of atoms are conveniently measured in units of mole of atoms. One mole of atoms (1 mol) of any element contains the same number of atoms as there are in exactly 12 grams of the isotope C-12. It had been determined by experiment that the number of atoms in 12 grams of C-12, and hence the number of atoms in one mole of atoms of any element, is 6 02 ×10 ^23 atoms. This number is called Avogadro's number in honor of the Italian professor of physics Amedeo Avogadro (1776-1856).
  Analogously to the definition of a mole of atoms, a mole of molecules contains the same number of molecules as there are atoms in exactly 12 grams of C -12. Thus a mole of molecules contain 6.02 × 10^ 23 molecules. To weigh out a mole of molecules weigh out a mass in grams numerically equal to the molecular mass of the molecule. This mass is sometimes called the molar mass of the substance. The unit for molar mass is grams per mole. Thus the molar mass of water, H2O, is 18 grams per mole and contains 6.02 × 10^ 23 molecules.