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An aqueous solution contains 0.387 M dimethylamine ((CH3)2NH). How many mL of 0.258 M perchloric acid...

An aqueous solution contains 0.387 M dimethylamine ((CH3)2NH).

How many mL of 0.258 M perchloric acid would have to be added to 225 mL of this solution in order to prepare a buffer with a pH of 10.400.

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