Diethyl ether has a boiling point of 34.5°C, and 1-butanol has a boiling point of 117°C: Both of these compounds have the same numbers and types of atoms. Explain the difference in their boiling points

The compound naphthalene is a small organic molecule which has a melting point of 350 K and a boiling point of 491 K. What is the state of this compound at 250°C?

Consider the following experimental boiling points: CH4: -162°C C3Hg: -42°C C6H14: 69°C C9H20: 151°C Which of the following statements is correct for this set of compounds and supported by the data given? Select as many as applicable Select one or more: The molecule with the strongest intermolecular forces is C9H20 The C-C bond is the strongest covalent bond among the four molecules The dominant effect behind this trend is the strength of dipole/dipole forces OCH4 is the most polarizable molecule of the four C9H₂0 is the most polarizable molecule of the four The dominant effect behind this trend is the strength of dispersion forces

Choose the substance with the highest boiling point.     CF 2H 2     F 2     H 2O     H 2S     NBr 3

A shiny black solid has a melting point of 114 C. It does not conduct electricity and it does not dissolve in water to form a conducting solution. The black solid is not as hard as an ionic crystal. What type of solid is this substance? Justify your answer.

Which of the following sets of compounds do we expect to have the same boiling point?