Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:FeO2/3 -- 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: FeO2/3
Molar Mass: 66.506 g/mol        1g=0.01503623733197 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Fe                1                  55.84                         83.96%
O                  0.7              15.999                        16.04%

Top Use: Molar Mass Calculator Formula: Co2(Cr2O7)3 Recent user inquiry: 5/7/2025 06:59Molar Mass Calculator Formula: CH2CHPh3P 5/7/2025 06:59Molar Mass Calculator Formula: P6O4 5/7/2025 06:59Molar Mass Calculator Formula: NH2HPO4 5/7/2025 06:59Molar Mass Calculator Formula: SeBrO2 5/7/2025 06:59Molar Mass Calculator Formula: Pb(n3)2