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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: Fe2S2O
Molar Mass: 191.799 g/mol        1g=5.21379152133223E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Fe                2                  55.84                         58.23%
S                  2                  32.06                         33.43%
O                  1                  15.999                        8.34%
Top Use:    Molar Mass Calculator     Formula:  Co2(Cr2O7)3

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