5) What is the multiple proportion of oxygen between Fe0 and Fe_(2)O_(3) with a fixed mass of Fe?

To find the multiple proportion of oxygen between FeO and Fe2O3 with a fixed mass of Fe, we need to compare the amount of oxygen in each compound.<br /><br />Let's assume we have a fixed mass of Fe. In FeO, the mass of oxygen is represented by the formula:<br /><br />Mass of oxygen in FeO = (Molar mass of O) / (Molar mass of FeO) * 100<br /><br />In Fe2O3, the mass of oxygen is represented by the formula:<br /><br />Mass of oxygen in Fe2O3 = (3 * Molar mass of O) / (Molar mass of Fe2O3) * 100<br /><br />The multiple proportion of oxygen between FeO and Fe2O3 can be calculated by dividing the mass of oxygen in Fe2O3 by the mass of oxygen in FeO:<br /><br />Multiple proportion of oxygen = (Mass of oxygen in Fe2O3) / (Mass of oxygen in FeO)<br /><br />This ratio will give us the multiple proportion of oxygen between FeO and Fe2O3 with a fixed mass of Fe.