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

answer: the figure is attached herewith.

step-by-step explanation:   we are given to sketch a unit circle and label the terminal points corresponding to

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.