When finding the solution to an engineering design problem, there is/are usually… a. only 1 possible correct solution b. a very limited number (2-3) of possible correct solutions c. many possible correct solutions d. i don't know

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

i think its 5049.

i hope this !