If 20 mL of a 0.5 M sodium hydroxide solution is necessary to neutralize 40 mL of an acid solution, what is the concentration of the acid in molarity? Use the equation MaVa = MbVb

Give two digits in your answer.

When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule