cho hon hop gom Cu FeO , Fe2O3vaso dd chua 1 mol axit H2SO4(axit loang phan ung vua du ) Sau phan ung con lai luong kim loai ko tan bang 14,68%khoi luong hon hop X . Mat khac cho Xtac dung voi khi CO nung nong thu dc 71,72g chat ran . viet PTHHcac p/u say ra. Tinh % khoi luong FeO trg hon hop X