Respuestas

2013-11-22T22:48:55+01:00
4K +O ------->K4O2------->K2O
2FE+O------->FE2O2---->FEO
2Ca+O2------>Ca2O2------->CaO
2CU+O2------->CU2O2------>CUO
2Ni+O2-------->Ni2O2------>NiO
2Au+O2-------->Au2O3------->Au2O3
2Pb +O4-------->Pb2O4-------->PbO2
4Li+O2-------->Li4O2------>Li2O