What is the SI ? Write SI unit of amount of a Substance ?
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Answer:
SI unit of Amount of a substance is mole which symbol is (mol).
Explanation:
SI-System of Internation
A system of units which is valid all over the world is called SI System.It is modern form of M.K.S Or M.K.S.A system.
It contains seven fundamental quantities and two supplementary quantities.
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