Which one of the following statements explains why mass is lost when a student heats a sample of BaCl₂ • 2H₂O crystals?

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume

What is the popular use of lithium batteries