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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
3BeO.Al2O3.6SiO2= (BeO)3.Al2O3.6SiO2
Formula: Cu( NO3)2. 2.5H2O
Molar Mass: 279.622 g/mol        1g=3.5762565177275E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Cu                1                  63.54                         23.44%
N                  2.1              14.007                        10.73%
O                  11.1            15.999                        63.65%
H                  12                1.0079                        4.32%

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

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