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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: Pr(NO3)2
Molar Mass: 264.918 g/mol        1g=3.77475294241992E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Pr                1                  140.91                        53.19%
N                  2                  14.007                        10.57%
O                  6                  15.999                        36.24%

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

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