Answer
1.) Hexane
2.) 2-Methylpentane
3.) 3-Methylpentane
4.) 2,2-Dimethylbutane
5.) 2,3-Dimethylbutane
Work Step by Step
Using the following IUPAC rules, you can successfully name these molecules
1.) Find the longest carbon chain. This is the root of the name.
2.) Number the chain so the substituents have the lowest numbers, this is the prefix. If there are multiple of different substituents write them in alphabetical order. If there are multiple of the same substituent add the appropriate prefix.
3.) Add an -ane ending.