1 A2/A-level resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter A2/A-level Subject Chemistry Exam board AQA TopicClear filter Acid-base titrations Amount of substance Calculations Determination of formulae Moles Percentage yield and atom economy Reactions Resources Mindmap Module 2: Foundations in Chemistry - Amount of substance A2/A-level, Chemistry Mindmap Search again