Question

It is defined as the number of particles per mole of a substance. *

a. Molar ratio

b. Mole

c. Avogrado's number​

Answer 1

Avogadro's number

Step-by-step explanation:

Avogadro's number

defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022×1023 mol-1 and is expressed as the symbol NA.