Answer:
The balanced reaction in the acidic medium is:

Explanation:

1)
( oxidation)
Balance oxygen by adding water :

Now , balance hydrogen by adding hydrogen ions on the side where hydrogen are less.

Add electrons to balance charge where positive charge is more.
..[1]
2)
(reduction)
Balance oxygen by adding water :

Now , balance hydrogen by adding hydrogen ions by adding them on the side where hydrogen are less.
..[2]
Add electrons to balance charge where positive charge is more.
..[2]
3 × [1] + 2 × [2]
The balanced reaction in the acidic medium is:

The answer is C. Light because light is a form of energy
Answer:
<h2><u><em>100 kcal of bond energy</em></u></h2>
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