Fe2O3 + 3CO-t0--> 2Fe + 3CO2
CuO + CO--t0--> Cu + CO2
Ta có nCu=9,6/64=0,15 = nCuO
=> mCuO= 0,15.80=12 g
=> %mCuO= 12.100/28=42,85%
=> %mFe2O3 =100- 42,85=57,15%
nFe2O3=x
nCuO=y
n Cu= 9,6/64=0,15 mol
=> n CuO = y= 0,15 mol
=> mCuO= 0,15.80= 12g
=> n Fe2O3= 28-12=16g