Question #524f7

1 Answer
Dec 23, 2014

Diatomic oxygen is composed out of two oxygen atoms. Each oxygen atom has a molar weight of 16 g/mol, which means that the O2 molecule will have a molar weight of 216=32 g/mol.

One mole is defined as the weight of exactly 6.0221023 atoms or molecules, depending on the substance.

1 mole of O has 6.0221023 atoms of O and weighs 16 grams.
1 mole of O2 has 6.0221023 molecules of O2 and weights 32 grams.