9. During a titration, 52.81 mL of 0.100 M NaOH was required to neutralize an acidic solution. (1.5pts) a. Calculate the number of moles of sodium hydroxide that were used to neutralize the solution. (1pts) b. Calculate the mass of sodium hydroxide needed to neutralize the solution (Hint: Start with the mole value fro 9a). Molar Mass NaOH = 39.99 g/mol (2.5pts) Upload your work showing the calculations for question 9a and 9b. Show all of your work including units and s