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Unformatted text preview: Empirical Formula = CuO Sample Questions: a. Reducing agent = An oxidized ion that loses electrons in a chemical reaction. b. Smelting = The chemical reduction of an oxide c. Reduction = Occurs when an ion gains electrons during a reaction. d. Percentage Composition = The amount of an ion present in a compound. e. Empirical Formula = The smallest whole number coefficients for a compound. Results and Conclusions: With the moles of each sample being exactly equal in the calculations above, the ratio of moles of oxygen to moles of copper was 1:1 and therefore the empirical formula is CuO. Since the numbers are exactly equal, there are no sources of error and the the only uncertainty would come from the measuring the original mass of copper on the scale to the nearest hundredth....
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