In a 0.25M solution, butanoic acid is 3.0% dissasociated; i) calculate the [H3O+], pH, [OH-] and pOH of solution. ii) calculate Ka of the acid. (help pls ASAP. i'll give to you :)​

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

Why is the structure of molecule important to its function?

37.0 °c = °f (human body normal temperature)