Molar mass of Water
The molecular formula of Water is H2O, giving a molar mass of 18.015 g/mol.
Molar mass
18.015g/mol
Computed from the formula with the IUPAC conventional atomic weights (abridged, 2021 edition).
Formula
H2O
Category
Common Solvents
Atoms per molecule
3
Water conversions
Mass ↔ amount and solution conversions derived from the stored molar mass of 18.015 g/mol.
1 mmol18.015 mg
1 g55.5093 mmol
1 M18.015 g/L
About Water
The universal solvent: its hydrogen-bonding network and high dielectric constant dissolve ionic salts and polar molecules, making it the aqueous phase of most laboratory work. Purified Type II reagent water is specified for HPLC mobile phases and trace-metal analysis because tap water contributes interfering ions.
Related compounds
Other entries in Common Solvents.
AcetoneC3H6O · 58.080 g/molAcetonitrileC2H3N · 41.053 g/molBenzeneC6H6 · 78.114 g/molChloroformCHCl3 · 119.369 g/molCyclohexaneC6H12 · 84.162 g/molDichloromethaneCH2Cl2 · 84.927 g/molDiethyl etherC4H10O · 74.123 g/molDimethyl sulfoxideC2H6OS · 78.129 g/molEthanolC2H6O · 46.069 g/molEthyl acetateC4H8O2 · 88.106 g/molGlycerolC3H8O3 · 92.094 g/molIsopropanolC3H8O · 60.096 g/mol