Compared to the energy it takes to separate oxygen and hydrogen from water, the amount of energy given off when they recombine is
A) the same.
B) slightly less.
C) much more.
D) slightly more.
E) much less.

Question

Quizplus · Accepted Answer

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another. Therefore, the amount of energy required to separate oxygen and hydrogen from water is the same as the amount of energy released when they recombine.

Compared to the Energy It Takes to Separate Oxygen and Hydrogen