Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:Na2Cr4O7 -- 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: Na2Cr4O7
Molar Mass: 365.9566 g/mol        1g=2.73256446256195E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Na                2                  22.9898                       12.56%
Cr                4                  51.996                        56.83%
O                  7                  15.999                        30.6%

Top Use: Molar Mass Calculator Formula: Co2(Cr2O7)3 Recent user inquiry: 12/5/2025 14:09Molar Mass Calculator Formula: C26H23O2Fe 12/5/2025 14:09Molar Mass Calculator Formula: Na2s2o5 12/5/2025 14:08Molar Mass Calculator Formula: h2so2 12/5/2025 14:08Molar Mass Calculator Formula: Mo(Oh) 12/5/2025 14:08Molar Mass Calculator Formula: 2CH3CHO(1)