The table below compares the distances between two bodies.
comparison of distance
bodies distance
x and y 30.2 au
y and z 7.2 light years
based on the table, which of the following statements could be true?
x and y are both within the solar system.
y and z are both within the solar system.
x and y are farther apart than y and z.
y and z are both present on earth.

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.

The mole ratio of hydrogen to ammonia is 3: 2.