Nya1679
contestada

Which of the following chemical equations is balanced?
2 Al + 2 CuO ----> A1,0, + 2 Cu
Fe, 0, + 3C --> 2Fe + 3 CO,
2 SO, + 02 S0, + 0, ---> 2 SO,
2 Ag,0 ----> 2 Ag + O2> 02