A 8.82 g sample of an aqueous solution of hydrochloric acid contains an unknown amount of the acid If 11.2 mL of 0.582 M barium hydroxide are required to neutralize the hydrochloric acid, what is the percent by mass of hydrochloric acid in the mixture? % by mass Use the References to access important values it needed for A 7.93 g sample of an aqueous solution of perchloric acid contains an unknown amount of the acid. If 24.2 mL of 1.99 M sodium hydroxide are required to neutralize the perchloric acid, what is the percent by mass of perchloric acid im the mixture? % by mass tot remaining A 10.9 g sample of an aqueous solution of perchloric acid contains an unknown amount of the acid. If 19.9 mL of 0.938 M sodium hydroxide are required to neutralize the perchloric acid, what is the percent by mass of perchlorie acid in the mixture? by mass ut remaining