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CHEMISTRY

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In a certain compound of copper and oxygen, a sample weighing 0.5424g contains 0.4831 g of Cu. How many moles of Cu in the sample? How many grams of Oxygen and how many moles of Oxygen are there in the sample? What is the mole ratio of Cu/O in the sample? What is the formula of the oxide and the molar mass of thye copper oxide?

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