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Mole Concept

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Published in: Chemistry
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Gaurav G / Delhi

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  1. MOLE CONCEPT : One mole of any species (atoms, molecules, ions or particles) is that quantity in number having a mass equal to its atomic or molecular mass in grams. The number of particles (atoms, molecules or ions) present in 1 mole of any substance is fixed, with a value of 6.022 • 1023. This is an experimentally obtained value. This number is called the Avogadro Constant or Avogadro Number (represented 1 mole (of anything) = 6.022 * 1023 in number 6.022 x 1023 atoms of C 6.022 x 1023 atoms of Il 6.022 x 1023 number of that particle 6.022 x 1023 numbers of molecules 1 mole of carbon atoms 1 mole of hydrogen atoms I mole of any particle (atoms, molcculcs, ions) 1 mole of molecules 12 g of carbon 1 g of H atoms Relative mass of those particles in grams Molecular mass in grams Fig. 3.5: Relattonshtp between mole, Avogadro number and mass

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