What is the H3O in a solution with Oh- =1 x 10-12 m?

E

Explanation:

Lets do this step by step

First, lets find the pOH

pOH=-log[OH] > pOH=-log[1x10^-12] >pOH=12

Now we can find the pH

14-12=2

Now we can use the pH=-log[H3O] to find the hydrogen ion concentration

2=-log[H3O] >[H3O]=1.0 x 10^-2

So the answer is E

the answers would be

the first one and the second one