USVI NGSS Science Grade 11 Practice Questions - U.S. Virgin Islands NGSS Science Summative Assessment, Grade 11 Exam

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Water (H2O) has a boiling point of 100 °C, whereas hydrogen sulfide (H2S) has a boiling point of -60 °C. Which intermolecular force accounts for water's significantly higher boiling point?

Hydrogen bonding between polar H2O molecules London dispersion forces between nonpolar molecules Covalent bonding between hydrogen and oxygen atoms within the molecule Ionic attraction between free hydrogen and hydroxide ions

Correct Answer:

Hydrogen bonding between polar H2O molecules

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