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Calcium carbonate can break down to form calcium oxide and carbon dioxide. CaCO3 → CaO + CO2 The oxygen atoms on the product side are
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Calcium carbonate can break down to form calcium oxide and carbon dioxide. CaCO3 → CaO + CO2 The oxygen atoms on the product side are

User Ququzone
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Answer: the answer is C balanced because the total number of oxygen atoms is 3.

Explanation: I know this cause I did the assignment and got it correct.

User Liastre
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balanced because the total number of oxygen atoms is 3.
User Mahmoud Badri
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