Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:4FeCr2O7 -- 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: 4FeCr2O7
Molar Mass: 275.825 g/mol        1g=3.62548717483912E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Fe                1.1              55.84                         21.69%
Cr                2.1              51.996                        39.15%
O                  7.3              15.999                        42.05%

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