Biosphere 2 was an attempt to have humans live within a perfectly closed system, as a model for living on other planets. The first attempt
failed because the system began losing CO2, which was chemically reacting with
the exposed concrete walls. How would you go about designing a habitat that is a
closed system? Explain how matter and energy would flow within the system.

Electrical charges of ionic bonds

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 answer is b. because when it leaves the bat, its bringing motion on where its going.