What is the effect of high activation energy on a chemical reaction? a. it reduces the potential energy of the reactants. b. it reduces the potential energy of the products. c. it makes the reaction produce more energy. d. it makes the reaction harder to start. e. it makes the reaction endothermic.

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer