Question

What is a mole?
Give definition

Answer 1

The mole is the unit of measurement in the International System of Units (SI) for the amount of substance. It is defined as the amount of a chemical substance that contains as many elementary entities, e.g., atoms, molecules, ions, electrons, or photons, as there are atoms in 12 grams of carbon 12 (12C), the isotope of carbon with relative atomic mass 12 by definition. This number is expressed by the Avogadro constant, which has a value of 6.022×1023 mol-1. The mole is one of the base units of the SI, and has the unit symbol mol.

Answer 2

One mole of any species is that quantity in number having a mass equal to its atomic or molecular mass in grams.
The number of particles in 1 mole of any substance is fixed, with a value of 6.022 * 10 raise to 23 .
The mass of 1 mole of a substance is equal to its relative atomic or molecular mass in grams.