Mole Concept

Mole concept & Avogadro Number

• In a substance, the amount of entities present for e.g. atoms, molecules, ions, is defined as a mole. A mole of any substance is 6.022×10²³ molecules.
• Mole concept is one of the most convenient ways of expressing the amount of reactants and product in the reaction.

The value of Avogadro’s number is approximately 6.022×10²³. The definition of Avogadro’s number is that it tells us the number of particles in 1 mole (or mol) of a substance. These particles could be electrons or molecules or atoms.

Molar Mass

Molar mass

A substance is something which has mass and occupies space. The molar mass/molecular weight is actually the sum of the total mass in grams of the atoms present to make up a molecule per mole. The unit of molar mass is grams/mole.