What is the m percentage of chloride ion in the seawater if its density is 1.025 {\rm g/mL}?

The m percentage of chloride ion in a 23.00 mL sample of seawater was determined by titrating the sample with silver nitrate, precipitating silver chloride. It took 43.00 mL of 0.2993 M silver nitrate solution to reach the equivalence point in the titration.