1)P->P2O5->H3PO4->Zn3(Po4)2->Zn->ZnO->ZnSO4->BaSO44P+5O2=2P2O52P2O5+3H2O=2H3PO4H3PO4+3ZnO=Zn3(PO4)2+3H2OZn3(PO4)2+3H2=3Zn+2H3PO42Zn+O2=2ZnOZnO+H2SO4=ZnSO4+H2OZnSO4+BaS=BaSO4+ZnS2)Mg->MgO->Mg3(PO4)2->Mg(OH)2->Mg(NO3)2->Mg->MgCl2->AgCl2Mg+O2=2MgO3MgO+2H3PO4=Mg3(PO4)2+3H2OMg3(PO4)2+6NaOH=3Mg(OH)2+2Na3PO4Mg(OH)2+2HNO3=Mg(NO3)2+2H2OMg(NO3)2+H2=Mg+2HNO3Mg+2HCl=MgCl2+H2MgCl2 + 2AgNO3 = Mg(NO3)2 + 2AgCl