The mass percent of Cl⁻ in a seawater sample is determined by titrating 25.00 mL of seawater with AgNO₃ solution, causing a precipitation reaction. An indicator is used to detect the end point, which occurs when free Ag⁺ ion is present in solution after all the Cl⁻ has reacted. If 65.65 mL of 0.2921 M AgNO₃ is required to reach the end point, what is the mass percent of Cl⁻ in the seawater (d of seawater = 1.024 g/mL)?