Amandadods Amandadods 16-10-2022 Chemistry Answered 2 CuFeS₂(s) + 5/2 O₂(g) → Cu₂S(s) + FeO(s) + FeS(s) + 2 SO₂(g) a) Label the oxidation number for each species involved in the reaction. b) Which species were oxidized? c) Which species were reduced?