A 0.125 g sample of a monoprotic acid (HX, one proton/H+) of an unknown molecular weight is dissolved in water and titrated with 0.1003 M KOH.  The endpoint is reached after adding 20.77 mL of base.  What is the molecular weight of the unknown acid? HX (aq) + KOH (aq) → H2O (l) + KX(aq)

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.  A 0.125 g sample of a monoprotic acid (HX, one proton/H+) of an unknown molecular weight is dissolved in water and titrated with 0.1003 M KOH.  The endpoint is reached after adding 20.77 mL of base.  What is the molecular weight of the unknown acid?

HX (aq) + KOH (aq) → H2O (l) + KX(aq)

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