chemical equilibrium question?

Question

HA(aq) <====> H^+ (aq) + A^- (aq). HA is a weak acid in solution. A- is the conjugate base. Suppose salt is added to the aqueous solution to yield an initial concentration for A- of [A-]=0.3 M. 1.00 M of HA is then added. K for the reaction = 1.0 x 10^10. whic of the following statements is incorrect.

1. At equilibrium the solution is acidic.

2. the final concentration of H+ is [H+]= 3.3 x10^-10 mol/L

3. The pH for the equilibrium solution is 9.5.

4. the final concentration of HA is approx. 1.00 M

Answer 1

There is no "A" on the periodic table.
I can't answer the question unless I know if it's Al (aluminum), As (arsenic), Au (gold) , Ar (argon), and I won't answer the question if it's a radioactive element.