To compare the results when the independent variable is not involved
        
                    
             
        
        
        
A hydrocarbon with three or more consecutive (cumulative) double bonds is known as a cumulene. They are analogous to allenes, only exhibiting a more elongated chain. The basic molecule in this category is butatriene, which is also simply known as cumulene.  
In the structure of a cumulene, there are 3 double bonds and 4 single bonds. The double bond comprises 1 sigma bond, and 1 pi bond and 4 hydrogen bond produces a sigma bond with carbon. Thus, the molecule of cumulene comprises 7 sigma bonds and 3 pi bonds.  
 
        
                    
             
        
        
        
Answer:
hey you wanna get it right try this one: 48.0 kcal
 was released... at constant pressure.
Explanation:
 
        
             
        
        
        
Answer:
potassium contains both Ionic and covalent bonds