Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:KwCr2O7 -- 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: KwCr2O7
Molar Mass: 438.883 g/mol        1g=2.27851158509215E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
K                  1                  39.098                        8.91%
w                  1                  183.8                         41.88%
Cr                2                  51.996                        23.69%
O                  7                  15.999                        25.52%

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