The illustration to the left represents a mixture of nitrogen (blue ) and oxygen ( red ) molecules. If the molecules in the above illustration react to form N2O4 according to the equation N2+2O2N2O4 the limiting reagent is the number of N2O4 molecules formed is and the number of molecules in excess is . The illustration to the left represents a mixture of xenon (brown ) and fluorine ( green ) molecules. If the molecules in the above illustration react to form XeF4 according to the equation Xe+2F2XeF4 the limiting reagent is the number of XeF4 molecules formed is and the number of atoms/molecules in excess is