Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:Pr2O3 -- 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: Pr2O3
Molar Mass: 329.817 g/mol        1g=3.03198440347223E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Pr                2                  140.91                        85.45%
O                  3                  15.999                        14.55%

Top Use: Molar Mass Calculator Formula: Co2(Cr2O7)3 Recent user inquiry: 11/15/2025 07:53Molar Mass Calculator Formula: AgNO4 11/15/2025 07:52Molar Mass Calculator Formula: Ca3As2 11/15/2025 07:52Molar Mass Calculator Formula: SI4 11/15/2025 07:52Molar Mass Calculator Formula: 8So2 11/15/2025 07:51Molar Mass Calculator Formula: CH3(CH2)2