Calcium carbonate decomposes on heating to form calcium oxide and carbon dioxide. When 10g of calcium carbonate is decomposed completely,then 5.6g of calcium oxide is formed. Which law of chemical combination will you use in solving this problem?
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10 g of calcium carbonate produces 5.6 g of calcium oxide. How much carbon dioxide is made? 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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