Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:Cu12As4S13 -- 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: Cu12As4S13
Molar Mass: 1478.9464 g/mol        1g=6.76157026380402E-04 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Cu                12                63.54                         51.56%
As                4                  74.9216                       20.26%
S                  13                32.06                         28.18%

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