To find the formula of a compound composed of carbon monoxide, and iron Fex(CO)y, the compound is burned in pure oxygen, an reaction that proceeds according to the following unbalanced equation. Fex (CO)y + O2 --> Fe2O3 + CO2 Determine the empirical formula of Fex(CO)y if you burn 1.959 g. of Fex(CO)y and obtain 0.799 g. of Fe2O3 and 2.200 g. of CO2.