Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:Fe5S5 -- 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: Fe5S5
Molar Mass: 439.5 g/mol        1g=2.27531285551763E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Fe                5                  55.84                         63.53%
S                  5                  32.06                         36.47%

Top Use: Molar Mass Calculator Formula: Co2(Cr2O7)3 Recent user inquiry: 9/14/2025 21:08Molar Mass Calculator Formula: C5H6N2O2 9/14/2025 21:08Molar Mass Calculator Formula: c2h8o 9/14/2025 21:08Molar Mass Calculator Formula: (ch2ch3) 9/14/2025 21:08Molar Mass Calculator Formula: HBrO4 9/14/2025 21:08Molar Mass Calculator Formula: c16h35