Which statement best describes the equation CaCO3 + 2HCl → CaCl2 + CO2 + H2O?

In a chemical equation, substances on the left side of the arrow are reactants, and substances on the right side are products. CaCO3 is on the left, so it is a reactant present before the reaction occurs. CaCl2, CO2, and H2O are all on the right, making them products.

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