Structure Determination

Question 1
For the following molecules determine the structure of the molecule from the EI-MS spectrum:

1. FW = 96; C₇H₁₂ [Solution]
   
2. FW = 115; C₇H₁₇N [Solution]
   
3. FW = 134; C₁₀H₁₄ [Solution]
   
4. FW = 162; C₁₁H₁₄O [Solution]
   
   Possible Structures: