Respuestas

2012-11-13T20:56:44+01:00

FORMULA DESARROLLADA:

                                    CH3

                                    |

                          CH3__CH_____NH

                                                |

                                     CH3__ C__CH3

                                                |

                                                CH3

                                               

     

                    

2012-11-13T21:03:00+01:00

FORMULA DESARROLLADA:

                                    CH3

                                    |

                          CH3__CH_____NH

                                                |

                                     CH3__ C__CH3

                                                |

                                                CH3

espero te sirva