Comments

• Fe2O3+CO ->Fe +CO2 for banlance, the coefficient CO is 3 and CO2 is also 3, Fe2O3 is 1, and Fe is 2 Fe2O3+3CO ->2Fe +3CO2

  in _Fe2O3 + _CO = _Fe + _CO2? Comment by dan-robinson_60b927d56f5f3 June 2021