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You can use mole ratios and molar mass to determine the masses of substances involved in a chemical reaction. Using the periodic table, calculate the molar mass of iron (III) oxide (Fe2O3). Type in your answer using two decimal places.Note: Molar mass should always be reported as two decimal places because the periodic table uses two. Significant figures do not apply to molar masses.Molar mass of Fe2O3 = g/mol