Which of the following statements are true? Select all answers that are true (this might be more than one answer). Select one or more: a. London dispersion forces are the only type of intermolecular forces that nonpolar molecules exhibit. b. Molecules that have only London dispersion forces will always be gases at room temperature (25 oC). c. None of the listed answers are true. d. The molecules in SO2 (g) exhibit dipole-dipole intermolecular interactions. e. CH3CH2CH3 has stronger London dispersion forces than does CH4.

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.