Avogadro’s number is the number of particles in one mole of a pure substance true or false

Which of these conditions most likely produces an unstable isotope?

Which of the following electromagnetic waves can create ions?

The msds for glacial acetic acid says that it is a flammable liquid that can severely burn any human tissue it comes in contact with. it reacts with bases, various metals, and strong oxidizing agents. its vapors can form explosive mixtures with air.