Answer:
E.) ethane
Explanation:
Each of these molecules is a simple carbon chain surrounded by hydrogens. The number of carbons can be determined by the prefixes:
---> non- = 9 carbons
---> hept- = 7 carbons
---> pent- = 5 carbons
---> dec- = 10 carbons
---> eth- = 2 carbons
The more carbons there are, the higher the boiling point. This is because it is more difficult to break a longer chain than it is a shorter one. Therefore, since ethane has the lowest number of carbons, it has the lowest boiling point.
