The graph below shows a reaction with a catalyst. How did the
addition of the catalyst change the graph?
Potential Energy
2
NGOCTOn Progress ISS
O
A. It lowered the height of part 1 and increased the height of
part 3.
O
O
B. It lowered the height of part 2.
c. It increased the height of part 1 and decreased the height
of part 3.
O
D. It increased the height of part 2.

Heat is involved in chemical change in two ways; chemical changes either result in heat being added to or removed from an object, and chemical changes require a certain amount of heat before they can take place.

The think of process to make something successful

The answer is d- principle of faunal succession.

Answerthe half-reaction having the greatest tendency to occur at the anode:     i₂(aq) + 2e⁻  ⇄ 2i⁻  ;   e = +0.53 v======oxidation occurs at the anode. we must therefore find the half-reaction with the greatest tendency to oxidize.the given values of e are reduction potentials (the form of the half-reactions are of reduction).the lower the reduction potential, the higher the potential to oxidize. the half-cell with the lowest reduction potential will have the greatest tendency to oxidize at the anode.the half-reaction having the greatest tendency must be    i₂(aq) + 2e⁻  ⇄ 2i⁻    e = +0.53 vbecause its reduction potential is the lowest out of the three.