Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:4FeS2 -- 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: 4FeS2
Molar Mass: 123.96 g/mol        1g=8.06711842529848E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Fe                1.1              55.84                         48.27%
S                  2.1              32.06                         54.95%

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