Answer:
Explanation:
The energy of a photon emitted when the electron moves from the 3rd orbital to the 2nd orbital is exactly same as the energy of a photon absorbed when the electron moves from the 2nd orbital to the 3rd orbital
 
        
             
        
        
        
Answer:
See explanation below
Explanation:
I found a picture of this exercise, to show you how to do this problem. 
The first picture is the compound, and the second is the mechanism of reaction to do this claisen rearrangement.
Hope this helps
 
        
             
        
        
        
<span><span>The column of a fractional distillation apparatus should be
aligned vertical to get better separation because
the column is essentially longer. It will prevent channeling in the
column. </span>Therefore column efficiency will be higher if it is as
vertical as possible instead of tilted.<span> Distillation is a process used to separate a mixture of two (or
more) components. In a typical </span>fractional
distillation, a liquid mixture
is heated in the distilling flask and the
process begins.</span>
        
             
        
        
        
C.... 376 tbh just took the test and was right