1. Calculate the silver ion concentration in a saturated solution of silver(I) carbonate(Ksp = 8.1 x 10^-12)
2. Calculate the minimum concentration of Mg^2+ that must be added to 0.10 M NaF in order to initiate a precipitate of magnesium fluoride (For MgF2, Ksp = 6.9 x 10^-9)