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2014-03-10T22:13:03+02:00
2Cu+O2- 2CuO
4Cu+O2-2Cu2O
Si+O2-SiO2
Ca2 + O2- 2CaO
2Al+3O2 -2Al2O3
P4+ 5O2 - 2P2O5

1 5 1
2014-03-10T22:19:25+02:00
2Cu+O2- 2CuO
4Cu+O2-2Cu2O
Si+O2-SiO2
Ca2 + O2- 2CaO
2Al+3O2 -2Al2O3
P4+ 5O2 - 2P2O5
1 4 1