Answer:
b. The amount of usable energy resulting from a reaction is always less than the total energy available in the starting materials.
d. The energy of the starting materials for a reaction equals the sum of the product energies plus energy released as heat and disorder.
Explanation:
Hello, here the answers
b. The amount of usable energy resulting from a reaction is always less than the total energy available in the starting materials.
In this case, since during the chemical reaction there was a rearrangement of the molecules due to the chemical change, there was a wasted energy for this process, thus, that will be unusable energy after the reaction finishes.
d. The energy of the starting materials for a reaction equals the sum of the product energies plus energy released as heat and disorder.
In this case, an energy balance help us substantiate it:
[tex]E_{reagents}=E_{products}+E_{changed}[/tex]
Since during a chemical reaction, the difference between the reagents and products is defined by the implied change that separate them after the reaction is complete.
Best regards.
