Calculate molar mass (calculate molecular weight, Molar Mass Calculator).Formula:SeH204 -- 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: SeH204
Molar Mass: 284.5116 g/mol        1g=3.51479517882575E-03 mol
Percent composition (by mass):
Element  Count           Atom Mass                %(by mass)
Se                1                  78.9                          27.73%
H                  204              1.0079                        72.27%

Top Use: Molar Mass Calculator Formula: Co2(Cr2O7)3 Recent user inquiry: 11/29/2025 02:59Molar Mass Calculator Formula: 4C3 11/29/2025 02:59Molar Mass Calculator Formula: C3F6O 11/29/2025 02:58Molar Mass Calculator Formula: (C5H12) 11/29/2025 02:57Molar Mass Calculator Formula: C10H14N2 11/29/2025 02:57Molar Mass Calculator Formula: CsPbCl3