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Mole: A Simple Concept
Posted by Admin on 23-01-2014 at 12:12 pm Under Chemistry Cafe

Mole: A Simple Concept

MOLE- It is an amount of a substance in which 6.022X1023 particles are present.

6.022X1023 is known as Avogadro's number.

1 mole atoms = gram atomic mass = 6.022X1023 atoms

example - 1 mole oxygen atoms = gram atomic mass of oxygen =16 g = 6.022X1023 atoms

 

1 mole molecules  = gram molecular  mass = 6.022X1023  molecules

Example -1 moleoxygen  molecules  = gram molecular  mass of oxygen =32 g = 6.022X1023 oxygen molecules

 

1 mole ions  = formula unit mass = 6.022X1023 ions

Example - 1 mole( SO4)2- ions  = formula unit mass of ( SO4)2-=96g = 6.022X1023  ( SO4)2ions

 
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