Question

What does mol mean?

Answer 1

We know that it's specified as the quantity of any substance constituting the equivalent amount of fundamental units as the identical number of fundamental unit in pure sample of $12C$ measuring accurately $12\text{ }g.$

Complete answer:
Mole is a Latin word whose meaning is pile or mass of stones placed in the sea. The mole or mol (abbreviation form) is the SI unit which measures the amount of substance present. A mole is an entity which helps us to match the particles of a given substance along with its mass. The molecular weight or molar mass is nothing but the summation of masses of each and every atom in grams which constitute a mole of a molecule. Molar mass can be determined by dividing the given mass of any substance by the quantity of that substance in g/mol.
Generally the mass of the substance or a compound is different from the molar mass of the substance. One mole of a molecule is equal to the Avogadro number of atoms or molecules present in the compound. Also we know that the SI units or International System of Units is a modern form of metric system. This system of measurement is official in all countries. In this system seven units present, they are, meter (unit of length), Second (unit of time), ampere (unit of current), kilogram (unit of mass), mol (unit of amount of substance), kelvin (unit of temperature) and candela (unit of luminous density).

Note:
Remember that don’t be confused with the words molar mass and molecular weight of the substance. Both are not the same. Mass of compound is the sum of atomic weight of each atom present in the given molecule but the molar mass means is the product of molecular weight and the number of moles of the given compound.