(1)    Is the correct answer. (ethanoic acid)

By looking at Table H, we can see that the vapor pressure of ethanoic acid is much lower than the other samples.  In this case, the vapor pressure of ethanoic acid is approximately 22 kPa.

(2) Amine is the correct answer.  You can locate this on your table of organic roots and you should remember that amines are organic compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are derivatives of ammonia.

A saturated compound is defined as a compound that only contains single carbon-carbon bonds.  In this case, hydrocarbon 2-methylpropane is saturated because it contains no multiple bonds.

The molecules of 2-iodo-2-methylpropane are more polar than the molecules in 2-methylpropane.

Also, there are stronger intermolecular forces between the molecules of 2-iodo-2-methylpropane.

Both of these factors cause 2-iodo-2-methylpropane to have a higher boiling point.