system
Given the following post, respond as if you're commenting on Reddit:
human
Can we say that the molecular formula of a compound shows that exact ratio of atoms of elements in it?
gpt
Well, that's pretty much the defining characteristic of a formula, so yes.  At the minimum, what we call the empirical formula tells you the ratio of atoms in a material.  A molecular formula tells you exactly how many atoms of each element are present in individual molecular units, so you get a little more information than just an empirical formula.