Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:2Fe2O3.2Fe2O -- e-Tools Age

	Calculate molar mass
	Enter a chemical formula in the field below, pay attention to formula is case sensitive!!!	The formula should be entered as: H₂SO₄= H2SO4 CuSO₄.5H2O=CuSO4.5H2O 3BeO.Al2O₃.6SiO₂= (BeO)3.Al2O3.6SiO2

Calculations:
Formula: 2Fe2O3.2Fe2O
Molar Mass: 417.035 g/mol        1g=2.39788027383793E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Fe                6                  55.84                         80.82%
O                  5.1              15.999                        19.66%

Top Use: Molar Mass Calculator Formula: Co2(Cr2O7)3 Recent user inquiry: 11/30/2025 09:14Molar Mass Calculator Formula: 4Sn 11/30/2025 09:14Molar Mass Calculator Formula: Ni(NO2) 11/30/2025 09:13Molar Mass Calculator Formula: CuSO4Mg(OH)2 11/30/2025 09:13Molar Mass Calculator Formula: (NH4)2Mg(SO4)2 11/30/2025 09:13Molar Mass Calculator Formula: c4H11N