Question

what
is the
SI unit of amount of substance ?
define it​

Answer 1

➠ AnSwer :-

$⟹$SI unit of amount of substance :-

• The mole, symbol mol, is the SI unit of amount of substance.
• 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.