a rock that is pushed down a hill represents both potential and kinetic energy. which statement best represents the energy transformation involved in this scenario

Can someone me with questions 15 to 17 plz.

For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with ph. if the solubility does change, pick the ph at which you'd expect the highest solubility. you'll find ksp data in the aleks data tab. compounds does solubility change with ph

What substance has a mass of 9.5g and volume of 2.1cm^3