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Extraction of copper from its sulphide ore.

Answer» `{:(2Cu_(2)S,+,3O_(2),to, 2Cu_(2)O, +, 2SO_(2) uarr),("Copper",,"Oxygen",,"Copper",,"Sulphur"),("Sulphide",,,,"oxide",,"dioxide"),(2Cu_(2)O,+, Cu_(2)S, to, 6Cu,+,SO_(2) uarr),("Copper",, "Copper",,"Copper",,"Sulphur"),("oxide",,"sulphide",,,,"dioxide"):}`


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