Answer
a) alkene $C_{12} H_{24}$
b) alkyne $C_{7} H_{12}$
c) alkanes $C_{13} H_{28}$
Work Step by Step
Recall:
1- Alkanes $C_{n}H_{2n+2}$. Example: Methane $CH_{4}$ and $C_{13} H_{28}$
2- Alkenes $C_{n}H_{2n}$ Example: Ethylene $C_{2}$ $H_{4}$ and $C_{12} H_{24}$
3- Alkyne $C_{n}H_{2n-2}$. Example: Acetylene or Ethyne $C_{2}$ $H_{2}$ and $C_{7} H_{12}$
