Draw structural formulas for the three secondary 2 degree amines with the molecular formula C4H11N

To draw the structural formulas for the three secondary amines with the molecular formula C₄H₁₁N, we first need to understand what a secondary amine is. A secondary amine is one in which the nitrogen atom is bonded to two carbon atoms and one hydrogen atom.

Given C₄H₁₁N, we can deduce the following three secondary amines:

• 1. N-ethylpropylamine:
  
• 2. N-methylbutylamine:
  
• 3. Dimethylamine:
  

In each of these structures, the nitrogen is bonded to two carbon chains and one hydrogen atom, satisfying the criteria for secondary amines. Additionally, all these compounds have the correct molecular formula C₄H₁₁N living up to their classification.