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Mole Concept -
One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly 12 g (or 0.012 kg) of the 12C isotope.
- wherein
one mole = 6.0221367 X 1023
Law of multiple proportion -
If two elements can combine to form more than one compund, the masses of one element that combines with a fixed mass of other element are in ratio of small whole numbers.
- wherein
masses of oxygen combining with a fixed mass of hydrogen have ratio 16:32 => 1:2
Law of conservation of mass -
Matter can neither be created nor destroyed.
- wherein
Mass is balanced on both sides
The reaction is:
For 20 moles of ammonia, the balanced equation is: