Molar mass of H2O is 18.01528 ± 0.00044 g/mol
Compound name is water
Elemental composition of H2O
Sample reactions for H2O
Formula in Hill system is H2O
Computing molar mass (molar weight)To calculate molar mass of a chemical compound enter its formula and click 'Compute'. In chemical formula you may use:
Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa.
Computing molecular weight (molecular mass)To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets.
Examples of molecular weight computations: CO2, SO2.
Definitions of molecular mass, molecular weight, molar mass and molar weight
Related: Molecular weights of amino acids
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