Question

An alkane with the formula C6H14 can be prepared by hydrogenation of either of two precursor alkenes having the formula C6H12. Write the structure of this alkane.

Answer 1

            
             H  H H H H H
              |   |   |   |   |   |
         H-C-C-C-C-C-C-H  
              |   |   |   |   |   | 
             H  H H H H H
This is the structural formula for C6H14. Every carbon atom in the molecule must be surrounded by four bonds. Hope this answers your question.