Question

A 'mole' of a substance is the same as ________.

• A. avogadro's number of particles of the substance
• B. the molecule
• C. the quantity of substance reacting with 8 parts of oxygen
• D. the saturated solution of the substance

Answer 1

The correct option is A avogadro's number of particles of the substance

The mole is a unit of measurement for amount of substance. It is defined as the amount of any chemical substance that contains elementary particles e.g. atoms,molecules,ions or electrons. This number is expressed by the Avogadro constant which has value of ${6.022\times 10}^{23}$.