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A beaker is filled with 200.0 mL of a sodium hydroxide solution with an unknown concentration....

A beaker is filled with 200.0 mL of a sodium hydroxide solution with an unknown concentration. A 0.0100 M solution of HCl is used in the titration. The equivalence point is reached when 18.5 mL of HCl have been added.

What is the initial concentration of NaOH in the beaker?

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