Acar travels 240 km in 2.0 hrs and a sprinter travels a 100. m in 9.5 s. which is traveling faster and by how much?

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products