Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:K2O3S2 -- 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: K2O3S2
Molar Mass: 190.313 g/mol        1g=5.25450179441236E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
K                  2                  39.098                        41.09%
O                  3                  15.999                        25.22%
S                  2                  32.06                         33.69%

Top Use: Molar Mass Calculator Formula: Co2(Cr2O7)3 Recent user inquiry: 11/14/2025 17:20Molar Mass Calculator Formula: C2H3OF4 11/14/2025 17:20Molar Mass Calculator Formula: 2hci 11/14/2025 17:19Molar Mass Calculator Formula: H5C8O2Cl 11/14/2025 17:19Molar Mass Calculator Formula: c6h12o3n2 11/14/2025 17:19Molar Mass Calculator Formula: Cu2