16.
 Mg(OH)2 +
 H.PO.-> ||||Mg(PO2 +
 H2O
 2,3,6,1
 3, 3, 1,6
 3, 2, 1,6
 2,3,1,3
 17. Cr+Fe(NO.)2 ->
 Fe +_ Cr(NO3)2
 4,6,6,2
 0 2,3,2,3
 0 1,3,3,1
 02.3, 1.2
 0 2,3,3,2
 these are two questions separated but I would REALLY appreciate if someone could do them it’s for a test