Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:Os3C9O15 -- 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: Os3C9O15
Molar Mass: 918.684 g/mol        1g=1.08851356941016E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Os                3                  190.2                         62.11%
C                  9                  12.011                        11.77%
O                  15                15.999                        26.12%

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