What is true for the energy involved in an explosion?
there is more energy at the end of the explosion than there is at the beginning.
there is less energy at the end of the explosion than there is at the beginning.
there is the same amount of energy at the end of the explosion than there is at the beginning.< < < my answer
the amount of energy before and after the explosion depends on the type of reaction.
can someone check it?

Idid a lab for chemistry where we put nails in a copper (ii) chloride solution. 1. why did the reaction stop? which reactant was used up? how do you know? 2. describe what was happening to the atoms of iron and copper during the reaction. what is this type of reaction called? 3. what would happen to the ratio of copper to iron if you had placed more nails in the beaker? if you had let the reaction go for less time? 4. what is the accepted ratio of copper atoms to iron atoms in this reaction? account for differences between your experimental value and the accepted value. write the balanced equation for the reaction.