What is the ph of a solution with [h+]2.3 x 10^-9 ? a. -9.00b.-8.64c. 9.00d.8.64?

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

Describe the interaction that occurs between two objects with the same electrical charge.

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins