calcium carbonate decomposes on heating to form calcium oxide and carbon dioxide. when 10g of calcium carbonate is decomposed completely, then 5.6 gram of calcium oxide is formed. which law of chemical combination will you use to solve this problem?
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If you start with 10 g of reactant, you must end up with 10 g of product. 5.6 g of the product is calcium oxide, so 10 – 5.6 = 4.4 g of carbon dioxide.
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