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Chemistry, 20.12.2019 19:31 trmcswain03

Copper can be found as a free metal, but most often it is found in a compound with sulfur, such as cus (covellite) or cu2s (chalcocite). 1. these ores often are heated with oxygen to change them to copper oxides. sulfur dioxide gas also is formed. write a balanced chemical equation for this reaction for each of the copper sulfides.

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