Easy 10 points ? AP Chemisty ph scale exercise question for promblem set 2 help

Problem Set #2:

Find the pH of a solution whose [H3O+] is 9.5 X 10 -8 M.
What is the [H3O+] concentration of a solution with a pH of 5.45?
Find the pH of a solution whose pOH is 1.36.
What is the pOH of a solution with a [OH -] concentration of 2.97 X 10 -10 M?
Calculate the pH of a solution with a [OH -] concentration of 1 X 10 -4 M.

Find the pH of a solution whose [H3O+] is 9.5 X 10 -8 M.--7.02
What is the [H3O+] concentration of a solution with a pH of 5.45?--3.55 X 10^-6
Find the pH of a solution whose pOH is 1.36.--12.64
What is the pOH of a solution with a [OH -] concentration of 2.97 X 10 -10 M?--9.53
Calculate the pH of a solution with a [OH -] concentration of 1 X 10 -4 M.--10.0