Explain the differences in the solubilities of the gases in the table by completing the following sentences.

1. Compared to oxygen, nitrogen's makes it more difficult for water molecules to the surround nitrogen molecules. 
2. The high solubility of sulfur dioxide can be explained by its . 
3. Nitric oxide is more soluble than nitrogen and oxygen because of its . 
4. Compared to nitrogen, the of ethylene makes it more soluble in water. 

CHOICES are: 
a. shorter bond length 
b. ability to react with water 
c. larger molecular size 
d. polarity

answers: a, b, d, c.

The capability to do work is said to be energy. It can neither be created nor be destroyed according to law of conservation of energy. Energy exist in different forms depends upon the work to be done such as potential energy, kinetic energy, mechanical energy, heat energy etc.

Now, when the guitarist plucks the guitar strings to make sound, he uses mechanical energy and when guitarist plucks the guitar strings guitar produces sound energy also.

Thus, option (d) is the correct answer.