What is the missing reagent in the reaction below? 
Definitions:
Bronchioles
The small passages in the lungs that lead air to and from the alveoli, instrumental in the process of breathing.
Gas Exchange
The biological process through which organisms exchange oxygen and carbon dioxide with their environment, fundamental in respiration and photosynthesis.
Medulla Oblongata
Hindbrain region that influences breathing and controls reflexes such as coughing and vomiting.
Pacemaker
A medical device that regulates the heartbeat by sending electrical pulses to stimulate the heart when it is beating too slowly or irregularly.
Q5: Vitamin C is a stable enediol.Which is
Q7: How many products,including stereoisomers,are formed when (R)-2,4-dimethylhex-2-ene
Q12: What is the product of the following
Q13: Which of the following compounds is not
Q15: What is the major organic product of
Q21: Identify the major organic product of the
Q23: The following molecule is called <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7814/.jpg"
Q25: What is the IUPAC name of the
Q39: Predict the major organic product of the
Q39: What is the major organic product of