The number of atoms in a mole of any pure substance is called Avogadro's number.
I think it should be A option the election structure supports inactively
<span>Pure substances can be either elements or compounds. Mixtures can be eitherhomogeneous or heterogeneous. ... Sometimes it can be difficult to tell the difference between a compound and a homogeneous mixture based solely on appearance. Consider gasoline.</span>
Answer:
Chemical that can be mixed with another chemical to reduce the dangerous of a specific chemichal