GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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UNIT OF AMOUNT OF SUBSTANCE
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MOLE
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SEC
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LUX
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KG
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Explanation:
Detailed explanation-1: -One mole (mol) contains exactly 6.02214076 × 1023 elementary entities. This number is the fixed numerical value of the Avogadro constant, NA, when expressed in the unit mol−1 and is called the Avogadro number. The amount of substance, symbol n, of a system is a measure of the number of specified elementary entities.
Detailed explanation-2: -The mole, symbol mol, is the unit of the amount of substance.
Detailed explanation-3: -In chemistry, the amount of substance n in a given sample of matter is defined as the quantity or number of discrete atomic-scale particles in it divided by the Avogadro constant NA.
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