Question

What are some common mistakes students make with Avogadro's law?

Answer 1

Well, for a start not specifying whether it is the gas law, or the law of equivalence … and you done that here.

Explanation:

Under conditions of constant pressure....

`Vpropn`..i.e. the volume expressed is proportional to the number of particles, i.e. the number of moles, of gas...

Of course chemists ROUTINELY use `"Avogadro's Number"` to specify the number of particles of atoms/molecules/particles in a given mass of substance...

Anyway, I think you should refine this question...