3 Quantitative chemistry ######################## Chemical measurements, conservation of mass and the quantitative interpretation of chemical equation **************************************************************************************************** Conservation of mass and balanced chemical equations ==================================================== Fluff Relative formula mass ===================== Fluff Mass changes when a reactant or product is gas ============================================== Fluff Chemical measurements ===================== Fluff Use of amount of substance in relation to masses of pure substance ****************************************************************** Moles ===== Fluff Amounts of substances in equations ================================== Fluff Using moles to balance equations ================================ Fluff Limiting reactants ================== Fluff Concentretion of solution ========================= Fluff Yield and atom economy of chemical reactions ******************************************** Percentage yield ================ Fluff Atom economy ============ Fluff Using concentrations of solutions in mol/dm3 ******************************************** Use of amount of substance in relation to volumes of gases **********************************************************