calculate the molar mass ( molecular weight) of a sample if a single molecule weighs 7.45 * 10^-23 g

Question

is this even possible to determine if you don’t know what elements are in the molecule? probably so but i’m stumped! S.O.S.

Answer 1

Multiply the mass of a single molecule by Avogadro's number, and that gives you the mass in grams of 1 mole of the molecules, which is the same as the molecular weight in grams per mole.