El nitrógeno esta formado en la naturaleza por dos isotopos, uno con masa atómica de U con una abundancia del %, y el otro con masa atómica de U con abundancia isotópica del% .¿ Cual es la masa atómica del isotopo? *

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.