chap_03_ppt - MOLE CONCEPT Vikasana Bridge Course 2012...

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MOLE CONCEPT Vikasana – Bridge Course 2012
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INTRODUCTION: A mole is a unit which is used to A mole is a unit which is used to express the amount of substance. It is defined as the amount of substance It is defined as the amount of substance which contains Avogadro number of particles 6 022 x 10 2 3 particles . 6.022 x , is called Avogadro’s number (represented by N ) named in the (represented by N A ), named in the honour of an Italian scientist Amedeo Avogadro Vikasana – Bridge Course 2012 Avogadro.
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MOLE IN TERMS OF MASS: MOLE IN TERMS OF MASS: The mole is the amount of substance (Elements or compounds) which has a (Elements or compounds) which has a mass equal to its gram atomic mass or gram molecular mass gram molecular mass. e.g., 1. One mole of oxygen atoms = 16 g (0ne gm atomic mass) (0ne gm. atomic mass). e.g., 2. One mole of oxygen molecule = 32 g (One gm molecular mass) Vikasana – Bridge Course 2012 32 g.(One gm. molecular mass)
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