The mass percentage of chloride ion in a 25.00-ml sample of seawater was determined by titrating the sample with silver nitrate, precipitating silver chloride. It took 42.58 mL of 0.2997 M silver nitrate solution to reach the equivalence point in the titration. What is the mass percentage of chloride ion in sea water if its density i s 1.025 g/mL?

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