Chemistry 0620 · Stoichiometry
Moles and chemical quantities
Original revision summary · Syllabus edition awaiting review · Cambridge alignment awaiting review
Key idea 1
Relative formula mass (Mr) is the sum of the relative atomic masses in the formula, e.g. CO₂ = 12 + 16 + 16 = 44.
Knowledge check · unscored
What is the Mr of carbon dioxide, CO₂? (C = 12, O = 16)
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