3.2 and 3.3 - I can recall the general formula and displayed formulae of alkanes

What is the general formula for the alkanes?

C_nH_2n+2

Describe and explain the trend in boiling points.
_{As the number of atoms increases, from methane to pentane, the boiling point increases as well because the number of atoms and bonds in the molecules increaes. This means that more energy, heat, is required to turn the hydrocarbon into a gas. This is beuse there are more intermolecular forces which exists between the molecules. ay}