Consider the decomposition of water, 2H2O —> 2H2 + O2. Is energy released or absorbed in this reaction? Discuss bond energy in your answer.

When atoms bond together to form compounds, they attain lower energies. The difference between energies of the bonded atoms and individual atoms is released in this case.

Similarly, when the compounds, like water, are broken, energy is absorbed, and the resultant atoms have higher energy.

2H₂O  ⇒  2H₂ + O₂

The energy required to break this bond is known as bond energy.

For example in the given reaction, 469kJ/mol is the bond energy absorbed to carry out the reaction.

the tides are influenced by both the moon and the sun, it's easy to see that when the sun lines up with the moon and the earth, as during a new moon or full moon, the tidal effect is increased. these are known as spring tides, named not for the season, but for the fact that the water "springs" higher than normal. on the other hand, if the sun and the moon are 90 degrees apart in relation to an observer on earth as during the first quarter moon or third quarter moon, then high tides are not as high as they normally would be. this is because despite its greater distance, the sun's mass allows it to exert enough gravitational force on the oceans that it can negate some of the effects of the moon's pull. this phenomenon of lower high tides is called a neap tide. if you need more information on this topic visit moonconnection.com.

the awnser is group 12