(Answered) A student is doing the experiment chemical formulas of

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A student is doing the experiment Chemical Formulas of Copper Sulfide by heating copper with excess of sulfur at very high temperatures using a Bunsen burner. Copper and sulfur react stoichiometrically and excess of sulfur escapes from the crucible as sulfur dioxide. He collected the following data:

Mass of crucible, cover, and copper 20.015 g

Mass of crucible and cover 19.548 g

Mass of crucible, cover, and copper sulfide 20.135 g

Determine the empirical formula of copper sulfide. Show calculations.

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