What volume (mL) of a 0.3428 M HCl(aq) solution is required to completely neutralize 23.55 mL of a 0.2350 M Ba(OH)2(aq) solution

answer; /// the amount of material dissolved in a measure of liquid(concentration) the above statement is (true); /// good luck

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)