The mole and the Avogadro constant

2 State that the mole, mol, is the unit of amount of substance and that one mole contains 6.02 × 10²³ particles, e.g. atoms, ions, molecules; this number is the Avogadro constant

1 State that concentration can be measured in g/dm³ or mol/dm³

3 Use the relationship amount of substance (mol) = mass (g) / molar mass (g/mol) to calculate: (a) amount of substance (b) mass (c) molar mass (d) relative atomic mass or relative molecular/formula mass (e) number of particles, using the value of the Avogadro constant

4 Use the molar gas volume, taken as 24 dm³ at room temperature and pressure, r.t.p., in calculations involving gases

5 Calculate stoichiometric reacting masses, limiting reactants, volumes of gases at r.t.p., and concentrations of solutions expressed in g/dm³ and mol/dm³, including conversion between cm³ and dm³