Answer:
Product D contains 30 J
Explanation:
We know energy does not destroy or create, it only transforms. So, at the right side of the equation we have the energy of the reactant A and the energy of the reactant B, as a sum, and, as a result we have to get the same energy plus the energy absorbed by the reaction.
So, we have,
Ea+Eb = Eabsorbed+Ec+Ed
Ed = Ea+Eb-Eabsorbed-Ec
Ed = 85.1 J + 87.9 J - 104.3 J - 38.7 J
Ed = 30 J
Answer:
Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements
Answer:
The law of conservation of energy states that the total energy is constant in any process. Energy may change in form or be transferred from one system to another, but the total remains the same.
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