In an early experiment, a 2.514-g sample of calcium was heated in a stream of pure oxygen, and was found to increase in mass by 1.004-g. Calculate the empirical formula of calcium oxide.
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Expert's answer
2018-02-15T07:15:11-0500
Solution: Amount of calcium in the sample: 2.514 / 40.08 = 0.0627 mol Amount of oxygen reacted: 1.004 / 16.00 = 0.0627 mol Ratio of elements: 0.0627 : 0.0627 = 1 : 1 Answer: CaO
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