Question

Calculate the molecular mass of-

Oxygen gas​

Answer 1

atomic number of oxygen is 8

therefore

the the molar mass of oxygen is 16

Answer 2

Answer:

Molecular mass is obtained by multiplying the atomic mass of an element with the number of atoms in the molecule and then adding the masses of all the elements in the molecule. O2 is a diatomic molecule. The mass of an oxygen atom = 16 amu. ∴ Mass of O2 molecule = 2 × 16 = 32 amu.