Hydrogen peroxide · H2O2

Hydrogen peroxide: formula H2O2, atom count, element breakdown and calculated molar mass.

CompoundH₂O₂

H₂O₂

Molar mass34.014 g/mol

Atoms4

Elements2

Hydrogen

2 × 1.008 · 5.93%

2.0160

Oxygen

2 × 15.999 · 94.07%

31.9980

The formula H₂O₂ contains 4 atoms in total. Numbers after element symbols show how many atoms of each element are present.

Molar mass is the sum of the contributions shown above. The percentages show how much each element contributes to the total mass.