This is for a study guide, i can't figure it out! you draw back on the piston of a pump and the volume of air in the pump doubles. which of the following happens? a. the number of collisions per unit area doubles. b. the temperature of the room doubles. c. half of the gas leaks out and the pressure is reduced. d. the number of collisions per unit area is reduced by one-half.,

um i think it might be a car?

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.