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what is meant by mole concept?
Mole :  Measurement used in chemistry to express amount of a chemical substance . A collection of 6.022 x 1023 elementary particles called mole is taken for all practical purposes. Mole is simply like a dozen or a gross .A mole is defined as the amount of a substance containing elementary particles like atoms,ions or molecules in 12 g of carbon (C-12) .

 Mole of atoms : One mole of atoms contain 6.022 x1023 atoms having mass equal to its gram atomic mass.

Mole of molecules : One mole contain 6.022 x1023 molecules and is equivalent to the gram molecular mass of any given substance .

Mole and molar volume : One mole of any gaseous molecule occupy 22.4dm3 (liter).This volume is known as molar volume .
The molar volume of a gas can be defined as the volume occupied by one mole of a gas at S.T.P.


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