Respostas

2013-11-07T17:48:34-02:00
1-H3CCl - Carbono=+2
2-CO2 - Carbono=+4
3-C6H6- Carbono=+6
4-CO- Carbono=+2
5-CH4- CArbono=+4
5-CH2O- Carbono=0

=D