What you’ll learn8 learning objectivesChoose one objective for a focused lesson, or study the complete topic.3.3.1Concentration can be measured in g/dm3• State: concentration can be measured in g/dm³ or mol/dm³Syllabus objective3.3.2Mole, mol, is the unit of amount of• State: 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 constantSyllabus objective3.3.3Amount of substance relation: amount• Use amount of substance relation: amount (mol) = mass (g) / molar mass (g/mol), to calculate amount, mass, molar mass, relative mass and particle number using Avogadro constantSyllabus objective3.3.4Molar gas volume, taken as 24 dm3 at• Use the molar gas volume, taken as 24 dm³ at room temperature and pressure, r.t.p., in calculations involving gasesSyllabus objective3.3.5Stoichiometric reacting masses• Calculate stoichiometric reacting masses, limiting reactants, volumes of gases at r.t.p., volumes of solutions and concentrations of solutions expressed in g/dm³ and mol/dm³, including conversion between cm 3 and dm³Syllabus objective3.3.6Experimental data from a titration to• Use experimental data from a titration to calculate the moles of solute, or the concentration or volume of a solutionSyllabus objective3.3.7Empirical formulae and molecular• Calculate empirical formulae and molecular formulae, given appropriate dataSyllabus objective3.3.8Percentage yield, percentage• Calculate percentage yield, percentage composition by mass and percentage purity, given appropriate dataSyllabus objective