I need help with two questions.

1.)Explain whether a chemical formula can describe a solution

Number two will be in a picture .it is underneath the two box’s.

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.

since electrons are negative the answer is neagtaive

the answer is d.) potassium

pv=nrt

explanation: