A student prepared a 1:1 buffer, for which [HAc] = [Ac-] = 0.05127 M. Using their 1:1 buffer and a 0.09313 M NaOH solution, the student prepared Solution D in Part 3 of the experimental procedure. Given this information, how many moles of HAc were there in the student's Solution D before a reaction took place? Report your final answer, in moles, to 6 decimal places and only include the numerical value (no units). Do not use scientific notation to answer this question.