Sodium hydroxide is used extensively in acid-base titrations because it is a strong, inexpensive base. A sodium hydroxide solution was standardized by titrating 43.00 mL of 0.1425 M standard hydrochloric acid. The initial buret reading of the sodium hydroxide was 1.07 mL, and the final reading was 38.97 mL. What was the molarity of the base solution?

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