Iron has a density of 7.86 g/cm3. If volume of a sample of iron is 15.0 mL, what is the mass in grams of this sample of iron? Record your answer to three significant digits!
grams

Cause its being chemically applied?

Sorry i dont understand the question can you rephase it?

The correct answer would be b) volume versus temperature, because they are also directly proportional.

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.