Molecular mass calculator
See every atom contribute to the mass of one mole.
Live model
Drag with a mouse or one finger to rotate. Use the zoom control or mouse wheel to move closer.
Water
H2O
Module 2 of 13
Description of this simulation
Water (H2O): Molecular mass calculator — 18.015 g/mol. Two lone pairs compress the H–O–H angle and leave a strong net dipole.
Live result
18.015 g/mol
Two lone pairs compress the H–O–H angle and leave a strong net dipole.
Molecule at a glance
- Geometry
- Bent
- Symmetry
- C₂v
- Polarity
- Polar
- Bond angle
- 104.5°
What this model shows — and what it simplifies
Molar mass is computed from the same standard atomic weights used by the periodic table, multiplied by the parsed atom count in the molecular formula.
Where do we see this in real life?
Every solution recipe begins here: molar mass converts a weighed mass in grams into the number of molecules available to react.