An analytical chemist weighs out 0.280g of an unknown diprotic acid into a 250mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.1400M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 26.7mL of NaOH solution. Calculate the molar mass of the unknown acid. Round your answer to 3 significant digits.

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An analytical chemist weighs out 0.280g of an unknown diprotic acid into a 250mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.1400M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 26.7mL of NaOH solution.

Calculate the molar mass of the unknown acid. Round your answer to 3 significant digits.

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