explain why the student could not use this apparatus to determine the boiling point of substance B (substance b melts at 60°c and boils at 190°c)

What must happen before a body cell can begin mitotic cell division

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

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.