1.- Los alcanos del propano (C.) al pentadecano (C ) huelen a gasolina , pero los términos superiores ( más de C .. ) sin inodoros (sin olor ) esto se debe a:
a. Su alto peso molecular
c. Su baja polaridad
b. Su baja temperatura de ebullición
d. Su escasa volatilidad

Which of the following is not a characteristic of a hydrogen bond? 1. it is responsible for the unusual physical properties of water. 2. it is weaker than a covalent bond. 3. it is stronger than other dipole-dipole interactions. 4. it can occur when hydrogen is covalently bound to very electronegative elements liks f, cl, br and i.