Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:K2S2O3.5H2O -- 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: K2S2O3.5H2O
Molar Mass: 280.387 g/mol        1g=3.56649916008945E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
K                  2                  39.098                        27.89%
S                  2                  32.06                         22.87%
O                  8                  15.999                        45.65%
H                  10                1.0079                        3.59%

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