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what is the use of avagadro number?
 Avagadro number is defined as the number of constituent particles (usually atoms or molecules) in one mole of a given substance. It has dimensions of reciprocal mol and its value is equal to 6.02214129(27)×1023 mol?1.
Changes in the SI units are proposed that will change the constant to exactly 6.02214X×1023 when it is expressed in the unit mol?1 .
Avagadro's constant is a scaling factor between macroscopic and microscopic (atomic scale) observations of nature. As such, it provides the relation between other physical constants and properties.


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