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What is MOLE?And why it is used in chemistry?

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MOLE is a unit of measurement used in chemistry to express amounts of a chemical substance, defined as the amount of any substance that contains as many elementary entities as there are atoms in 12 grams of pure carbon-12, the isotope of carbon with relative atomic mass of exactly 12 by definition.
What's in a Mole?
-In reallife situations, pieces of matter are quantified by finding the mass or by counting.
-Market Vendors for example, wouldrather sell mongo seeds by getting the mass and salted eggs by couting.
-The choice of Quantifying Goods is Determined by Convenience.
-It is easier to get the mass of rice grains rather than get their mass.

MOLE- is a measure of the amount of particles of matter.