A $5\mathrm{.}25g$ quantity of a diprotic acid was dissolved in water and made up to exactly $2\mathrm{.}50{10}^{2}mL.$ Calculate the molar mass of the acid if $25\mathrm{.}0mL$ of this solution required $12mL$ of $1\mathrm{.}00$MKOH for neutralization. Assume that both protons of the acid were titrated. Round your answer to $3$ significant digits.