Which of the following has the greatest mass? 1 mole of uranium (u) 1 mole of oxygen (o) 1 mole of sodium (na) 1 mole of chlorine (cl)

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Non renewable resources like petroleum eventually

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons