OCR•A-Level•Chemistry
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Amount of Substance
The mole, concentration, gas volumes, and equations
Practice 17 subtopics in Amount of Substance. All questions match the OCR A-Level specification.
About Amount of Substance
Amount of Substance is a key topic in the OCR A-Level Chemistryspecification. This topic covers the mole, concentration, gas volumes, and equations.
Master all 17 subtopics below with unlimited AI-generated questions. Each subtopic page includes sample questions and the ability to generate unlimited practice questions with detailed solutions.
All Subtopics (17)
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The moleAvogadro constantMolar massMoles from mass: n = m/MConcentration in mol dm⁻³Concentration in g dm⁻³Dilution calculationsMolar volume at RTP (24 dm³)Ideal gas equation: pV = nRTBalanced equationsIonic equationsReacting mass calculationsLimiting reagentPercentage yieldAtom economyWater of crystallisationCalculating formula of hydrated salt
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