In a chemical reaction, the difference between the potential energy of the products and the potential energy of the reactants is equal to the(1) activation energy
(2) kinetic energy
(3) heat of reaction
(4) rate of reaction

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?

Which type of intermolecular force is pbr3