A) You want to acquire copper from copper oxide in metallic form. You prefer which metal to reduce copper oxide in terms of economy and availability. B) Using Ellingham diagram say that about 400 can nickel reduce cobalt oxide C) What must the H /HO and CO/CO ratio be for the reduction of manganese oxide at 700C. Show on the diagram by drawing. D) What oxides above the CO2 line can carbon monoxide reduce? E) When CrO,, NiO, SiO, AlO, and MnO materials meet with a reducer at 1000C, rank them from the first to the last to be reduced (25 puan)