Which answer choice best explains why nuclear reactions release more energy than chemical reactions?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

What three things does a balanced equation show you?