Ageneric salt, ab, has a molar mass of 241 g/mol and a solubility of 2.60 g/l at 25 °c. what is the ksp of this salt at 25 °c?

When the salt dissolves, it dissociates as follows;
AB --> A⁺ + B⁻
The molar solubility is amount of moles of the salt that can be dissolved in 1 L of solution.
solubility of the salt is - 2.60 g/L, to find molar solubility we have to multiply by the molar mass.
2.60 g/L /241 g/mol = 0.0108 mol/L
ksp = [A⁺][B⁻]
molar solubility of salt is equal to the molar solubility of cation and anion 
ksp = (0.0108)(0.0108)
ksp = 1.17 x 10⁻⁴

Coal i believe hope this

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !