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How many milliliters of 1.00 M KOH should be added to 100 mL of solution containing...

How many milliliters of 1.00 M KOH should be added to 100 mL of solution containing 10.0 g of histidine hydrochloride [His*HCl = (HisH+)(Cl-), FM 191.62] to get a pH of 9.30?

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