When a 0.099M aqueous solution of a certain acid is prepared, the acid is 0.063% dissociated. Calculate the acid dissociation constant Ka of the acid. Round your answer to 2 significant digits.

Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope