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Calculate molar mass

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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: Cu3FeS3
Molar Mass: 342.64 g/mol        1g=2.91851505953771E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Cu                3                  63.54                         55.63%
Fe                1                  55.84                         16.3%
S                  3                  32.06                         28.07%

Top Use:    Molar Mass Calculator     Formula:  Co2(Cr2O7)3

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