Chemistry path · GCSE Chemistry

Which way round should the mass ratio go?

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Practice question

In a lime works, calcium carbonate decomposes completely: CaCO₃ → CaO + CO₂. A batch contains 25.0 kg of calcium carbonate. Relative atomic masses: Ca = 40, C = 12 and O = 16. Calculate the mass of calcium oxide produced.

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Official curriculum

4.3.2.2 Reactant and product masses

This challenge practises knowledge and exam skills from the official GCSE science curriculum. Use these sources to see the exact subject content and its wider Key Stage 4 context.

AQA specification 4.3.2.2 Reactant and product masses GOV.UK Key Stage 4 science programme

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