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Chemical reactions can be classified as either heterogeneous or homogeneous. Which of the following equations below is best classified as a heterogeneous reaction?

Chemical reactions can be classified as either heterogeneous or homogeneous. Which of the following equations below is best classified as a heterogeneous reaction? Correct Answer 2Fe(s) + 3CO2(g) ? Fe2O3(s) + 3CO(g)

(C) Response (C) is the only one that has different phases noted.

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