Molecules/Acids/Hydrocarbins?

Question

12. Why do ethers have a boiling point that falls between the boiling points of hydrocarbons and alcohols?
The ring structure of the molecule does not break apart
The carbonyl group that is attached gives them stronger intermolecular forces
The noble gas that is attached provides them with hydrogen bonding capabilities
The oxygen molecule creates dipole forces that are weaker than the intermolecular forces created from an alcohol molecule, but stronger than the intermolecular forces of the hydrocarbons

26. How are esters different from carboxylic acids?
the hydrogen on the carbonyl group is replaced with another R group
the hydrogen on the hydroxyl group is replaced with another R group
they are ionic compounds
they always contain three carbons in their parent chains

31. What is the name of the following molecule: CH3CH2CH2NH2?
propanamine
propanamide
1-propanamine
1-propanol

Answer 1

12.)The oxygen molecule creates dipole forces that are weaker than the intermolecular forces created from an alcohol molecule, but stronger than the intermolecular forces of the hydrocarbons
26.) the hydrogen on the hydroxyl group is replaced with another R group
31.) 1-propanamine

Answer 2

12-Last
26- Second
31-First