Mole Concept

1 Gram Atom
1 Gram Atom is the number of atoms present in 1 formula gram of that atom.

1 Gram Mole
1 Gram Molecule is the number of molecules present in 1 formula gram of that atom.

1 Mole
1 Mole is the amount of substance which contains 6.022 x 1023 fundamental particles.

Mass of one mole = Molar Mass

Volume of 1 mole liquid = (Molar Mass) ml

Volume of 1mole gas = 22.4 L

Formulae
1) Number of Moles = Mass / Molar Mass

2) Number of Moles = Volume / Molar Volume

3) Number of Moles = Number of Particles / Avogadro's Number

4) For compound MxNy, x moles of N = y moles of M

Principle of Atom Conservation
1) No. of moles of an atom in Reactants = No. of moles of the atom in Products.

2) In reaction, H2 + O2 ---> H2O

No. of moles of O2 = No. of moles of H2O

2 x No. of moles of O2 = No. of moles of O in H2O