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Chemistry, 20.01.2021 04:30 needhhelp

A student heats calcium carbonate to produce calcium oxide, according to the following equation: CaCO3 (s) ➔ CaO (s) + CO2 (g)
If the student starts with 100.0 grams of CaCO3 and makes 45.0 g of CaO, what is his percent yield?

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