Question

Define a) Atomic mass unit
b)Mole

Answer 1

Atomic mass unit:

A unit of mass used to express atomic and molecular weights, equal to one-twelfth of the mass of one atom of carbon $12$. It is also known as Dalton

Mole:-

Standard scientific unit for meaning large quantities of very small entities such as atoms molecular or other specified particles.

The mole is the unit of measurement for the amount of substance in the International System of Unit $\left(SI\right)$. It is defined as the amount of a chemical substance that contains exactly $6.02214076\times {10}^{23}$ (Avogadro's constant) consecutive particles eg atoms. molecules, ions, or electrons.