Question

What is the mole used to count?

Answer 1

1 mole is the no of atoms/molecules/ions which number in avagadros number

Answer 2

Usually the amount of matter is calculated in moles in SI unit. It's frequently used to measure chemical substances. As a principle it is accepted & prooved that a one mol of an element sample contains avagadro no. of atoms...and a mole of compound contains avagadro no. of molecules. (Avagadro no. =6.022×10^23)