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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: Na2S2O3.6H2O
Molar Mass: 266.1854 g/mol        1g=3.75678004879306E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Na                2                  22.9898                       17.27%
S                  2                  32.06                         24.09%
O                  9                  15.999                        54.09%
H                  12                1.0079                        4.54%
Top Use:    Molar Mass Calculator     Formula:  Co2(Cr2O7)3

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