Chemistry · Chemical equations and stoichiometry
Calcium carbonate decomposes into calcium oxide and carbon dioxide. The reactant
Calcium carbonate decomposes into calcium oxide and carbon dioxide. The reactant is:
- A. Carbon dioxide
- B. Calcium oxide
- C. calcium carbonate
- D. None of the these
Step-by-step solution
The decomposition reaction is CaCO3 → CaO + CO2, so the starting substance that undergoes decomposition is calcium carbonate.
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