What does the mass percent of an element tell you about a molecule

Water's surface tension and heat storage capacity are accounted for by its a) orbitals b) weight c) hydrogen bonds d) mass e) size

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these