Mole Concepts (2)

Unit used to measure the amount of substance in the field of chemistry

Mole

Mole (1)

The mole, with the symbol mol, is the SI unit of amount of substance

Mole (2)

One mole of substance contains 6.02214076 × 1023 elementary entities of the substance

Mole (3)

The number ( 6.02214076 × 1023) is a fixed value known as the Avogadro constant, NA that is expressed in mol–1

Another name for the Avogadro constant, NA

Is also called the Avogadro number

The Avogadro constant, NA (1)

Is defined as the number of particles contained in one mole of substance, that is 6.02 × 1023 mol–1

The Avogadro constant, NA (2)

In other words, 1 mol of a substance contains 6.02 × 1023 particlesthat form the substance

The Avogadro constant, NA (3)

The type of particles depends on the type of substance, namely atomic substance, molecular substance or ionic substance

Numbers of particles in 1 mol of atomic substance

1 mol of an atomic substance contains 6.02 × 1023 atoms

Numbers of particles in 1 mol of molecular substance

1 mol of a molecular substance contains 6.02 × 1023 molecules