A mixture of calcium oxide, Cao, and calcium carbonate, CaCO 3, that had a mass of 3.454 g was heated until all the calcium carbonate was decomposed according to the following equation. After heating, the sample had a mass of 3.102 g. Calculate the mass of CaCO 3 present in the original sample. CaCO 3 (solid) – CaO (solid) + CO 2 (gas) O a. 1.60 g O b.0.200 g O c. 0.800 g O d. 1.00 g O e. 0.400 g

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