My teacher uses the online homework ARIS and the question is write the balanced equation of Mn3(PO4)2: i have enter the answer Mn3(PO4)2 (s) =3Mn^2+(aq) + 2(PO4)^3-(aq)

Answer 1

This looks ok to me IF it is for the solubility of Mn3(PO4)2 in water. I suppose the reason you posted is to tell us this isn't the right answer (at least I've seen that before in the last few days). If it isn't, please let us know what ARIS thinks.