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2. Give balanced chemical equations for the following processes that you observed. You will need to go through the introduction and the procedure carefully to deduce the chemical processes that occurred: a. Precipitation of iron and chromium using ammonia (ammonium hydroxide) b. Complexation of copper using ammonia c. Confirming that copper is the ion in solution by adding potassium ferricyanide (potassium is only a spectator ion) d. Oxidation of chromium (III) hydroxide using hydrogen peroxide e. Confirming that chromium is the ion in solution by adding lead (II) nitrate (nitrate is only a spectator ion) f. Confirming that iron is the other metal in the precipitate using potassium thiocyanate (potassium is only a spectator ion)