Inside an atom, which of these occupies the maximum volume? a) the electrons b) the protons c) the neutrons d) empty space (vacuum)

Avariable that is not being directly tested during an experiment should be

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma