A solution is 0.022M in Fe2+ and 0.014M in Mg2+. a. If potassium carbonate is used to selectively precipitate one of the cations while leaving the other cation in solutions which cation will precipitate first? What minimum concentration of potassium carbonate will trigger the precipitation of the cation that precipitates first?

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.