Q
what is the molecular mass of iron oxide
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Iron oxide comes in several forms with different chemical compositions, the most common being Iron(II) oxide (FeO), Iron(III) oxide (Fe2O3), and Iron(II,III) oxide (Fe3O4). To calculate their molecular mass, sum the atomic masses of iron (Fe, ~55.845 amu) and oxygen (O, ~15.999 amu) according to their stoichiometry. For FeO, the molecular mass is approximately 55.845 + 15.999 = 71.844 amu. For Fe2O3, it's 2*55.845 + 3*15.999 ≈ 159.688 amu. For Fe3O4, the calculation gives 3*55.845 + 4*15.999 ≈ 231.533 amu. These values are essential in various industrial applications, including the manufacturing of steel, magnetic devices, and as pigments.
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