6. The boiling point of water is 160°C higher than the boiling point of hydrogen sulfide (H2S) because
A) the molecular mass of hydrogen sulfide is much lower than that of water
B) hydrogen sulfide molecules tend to avoid contact with each other
C) water molecules are connected to each other by H-bonds
D) hydrogen sulfide molecules do not undergo London dispersion forces
E) None of the above
H-O-H
H
S