-log (1×10^-12) is how you calculate the pOH which in this case is 12
The branch of chemistry that the chemist might use will be the branch of <em>organic chemistry</em>. This is because gasoline is an organic compound. We can say that a compound is organic if it contains a carbon atom. Gasoline is composed of long chains of alkanes (hydrocarbons with single bonds) ranging from 4 carbon atoms to 12 carbon atoms.
It’s really any metal because metals form metallic bonds. They are the only substances which can make metallic bonds. So the answer is A