1. A rock is a solid formation occurs naturally in earth
2. A mineral is a chemical composition
3. Idk srry
AgBr(s) <—> Ag+(aq) + Br-(aq)
Ksp = [Ag+][Br-]
After 3 years, the substance will go through 4 half lives. You can do 230*(1/2)^4, which is 14.375.