Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:Pb2(Cr2O7)4 -- 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: Pb2(Cr2O7)4
Molar Mass: 1278.34 g/mol        1g=7.82264499272494E-04 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Pb                2                  207.2                         32.42%
Cr                8                  51.996                        32.54%
O                  28                15.999                        35.04%

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