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Question

Assume that you dissolve 10.9 g of a mixture of NaOH and Ba(OH)2 in 255.0 mL of water and titrate with 1.48 M hydrochloric acid. The titration is complete after 107.9 mL of the acid has been added. What is the mass (in grams) of NaOH in the mixture? Express your answer using two significant figures.