Question

question 9
what scientist discovered a mole?
amedeo avogadro
albert einstein
mrs. crevak

Explanation:

The mole is a fundamental unit in chemistry. Amedeo Avogadro is known for Avogadro's law, which led to the concept of the mole. Albert Einstein is famous for theories like relativity. There is no well - known scientist named Mrs. Crevak in the context of the mole.

Answer:

A. Amedeo Avogadro