Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:(P2O7)3 -- e-Tools Age

	Calculate molar mass
	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: (P2O7)3
Molar Mass: 521.823 g/mol        1g=1.91635861201978E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
P                  6                  30.974                        35.61%
O                  21                15.999                        64.39%

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