hoàn thành phương trình hóa học và caan bằng
fe+ O2 --->..........
H2 + .....................--->H2O
H2O+Na2O------>................
P+O2---->.................
H2+............--->Cu+--->............
H2O+SO2--->.........
..............+...................--->Na2O
Zn+HCL--->...........................+...............
....................+.......................-->H3PO4
......................+......................--->SO2
Al+......................-->.............+H2
H2O+Ca---.............+.................
KCLO3--->...............+...............
Al+HCL--->................+................
KMNO4--->......+.......+.........
Fe+H2SO4--->..........+...........
......+........--->FeCL2+H2
H2O+Na--->.............+....................