Molar Mass of H2O2
How to work out the molar mass of H2O2
- Count the atoms of each element in H2O2: 2 H and 2 O.
- Multiply each count by the element's atomic weight: 2 × 1.008 = 2.016; 2 × 15.999 = 31.998.
- Add the results: 2.016 + 31.998 = 34.014 g/mol.
Frequently asked questions
What is the molar mass of H2O2?
The molar mass of hydrogen peroxide (H2O2) is 34.014 g/mol, so one mole of it weighs 34.014 grams.
How many moles are in 100 grams of H2O2?
100 g ÷ 34.014 g/mol = 2.940 mol.
Which element makes up most of the mass of H2O2?
O, at 94.07% of the mass.
Common compounds
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