If 37.5 mL of methanol is dissolved in water to make 456 mL of solution, what is the concentration expressed in volume/volume % of the solute?

Why does his teacher ask him to balance the equation by including the correct coefficient

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver