Which salt is the best choice for a hot pack? Why? and Which salt is the best choice for a cold pack? Why? is it sodium chloride, lithium chloride, sodium hydroxide, or potassium chloride?

thermochemistry

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?

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".

How many grams of phosphorus are contained in 5.09 moles of phosphorus?