Question

do the relative proportions of elements in a given compound vary from sample to sample? please explain.

Answer 1

No, every water molecule in the universe is two parts hydrogen and one part oxygen. It doesn't matter where you collect it or how large or small the quantity is. They are all the same.

Answer 2

No, because it is an intensive quantity.

Step-by-step explanation:

According to IUPAC, an intensive quantity is one whose magnitude is independent of the size of the system/sample, on the other hand an extensive quantity is one whose magnitude is additive for subsystems.

Exemples of intensive quantities: temperature, density, concentration.

Exemples of extensive quantities: mass, volume, energy.