Tarea 7

Consultar la siguiente pág. de internet y resolver los ejercicios.
http://images.google.com.mx/imgres?imgurl=http://ithacasciencezone.com/chemzone/lessons/03bonding/mleebonding/hydrogenbondsblue.gif&imgrefurl=http://cta-3.blogspot.com/2007_06_01_archive.html&usg=__lEp_k-IRYRlxM7c21iTVb3Hr2jQ=&h=261&w=430&sz=68&hl=es&start=7&tbnid=K_aklL4drDucRM:&tbnh=76&tbnw=126&prev=/images%3Fq%3Dqu%25C3%25ADmicia%26gbv%3D2%26hl%3Des