Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:MgAs2O7 -- 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: MgAs2O7
Molar Mass: 286.1412 g/mol        1g=3.49477810255916E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Mg                1                  24.305                        8.49%
As                2                  74.9216                       52.37%
O                  7                  15.999                        39.14%

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