How would this reaction energy diagram be different if a catalyst were used in the reaction?
A. The activation energy would be lower
B. The final energy of the products would be lower
C. The final energy of the products would be higher
D. The activation energy would be higher

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.