1) ( 2)p+( 5)FeO→( 1)P2O5+( 5)Fe
(2) ( 3)Fe(红热)+( 4)H2O(气)→(1 )Fe3O4+4H2
(3) ( 2)N2+(3 )H2→( 2)NH3
(4) ( 8)Al+( 3)Fe3O4→( 9)Fe+( 4)Al2O3
1) ( 2)p+( 5)FeO→( 1)P2O5+( 5)Fe
(2) ( 3)Fe(红热)+( 4)H2O(气)→(1 )Fe3O4+4H2
(3) ( 2)N2+(3 )H2→( 2)NH3
(4) ( 8)Al+( 3)Fe3O4→( 9)Fe+( 4)Al2O3