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

 

What is the General formula of Alkanes?     C_nH_2n+2

 _{Describe the Trend in Boiling Points:} : A straight-chain alkane will have a boiling point higher than a branched-chain alkane due to the greater surface area in contact with the heat source, also, as the mass of the alkane increase the boiling point increases

Draw the displayed formula of the three isomers of pentane: