Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:FeSe2 -- 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: FeSe2
Molar Mass: 213.64 g/mol        1g=4.68077139112526E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Fe                1                  55.84                         26.14%
Se                2                  78.9                          73.86%

Top Use: Molar Mass Calculator Formula: Co2(Cr2O7)3 Recent user inquiry: 1/8/2025 04:09Molar Mass Calculator Formula: C15H32O2 1/8/2025 04:09Molar Mass Calculator Formula: Fe2(so3)3 1/8/2025 04:07Molar Mass Calculator Formula: 25.3(NH4)2C2O4 1/8/2025 04:07Molar Mass Calculator Formula: C7H12O6 1/8/2025 04:07Molar Mass Calculator Formula: Na2S.9H2O