Me plase asap! due in 6 !

the spring of a toy car stores 10 j of potential energy. only 8 j of energy changes to kinetic energy as the car moves. what happens to the remaining 2 j of energy?

Acetic acid, hc2h3o2, dissolves and completely dissociates in water and a solvation sphere of water molecules forms around the ions. this solute-solvent interaction

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse