Question

give the SI standard definition for the amount of substance​

Answer 1

Amount of substance, also called material quantity, is a dimensionless expression of the number of particles in a sample. The particles are usually atom s, but they can be protons, neutrons, electron s, or more fundamental particles such as quarks. ... Also see atom , mass , mole , and International System of Units ( SI ).

Answer 2

Answer:

mole is the S.I unit of amount of substance.