Answer: The
for the reaction is 212 kJ
Explanation:
According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.
According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.
The net reaction is
![\Delta H=?](https://tex.z-dn.net/?f=%5CDelta%20H%3D%3F)
The intermediate balanced chemical reaction will be,
(1)
![\Delta H_1=-605kJ](https://tex.z-dn.net/?f=%5CDelta%20H_1%3D-605kJ)
(2)
![\Delta H_2=-996kJ](https://tex.z-dn.net/?f=%5CDelta%20H_2%3D-996kJ)
(3)
![\Delta H_3=-638kJ](https://tex.z-dn.net/?f=%5CDelta%20H_3%3D-638kJ)
![\Delta H=\Delta H_1+\frac{1}{2}\times -\Delta H_2+\frac{1}{2}\times -\Delta H_3](https://tex.z-dn.net/?f=%5CDelta%20H%3D%5CDelta%20H_1%2B%5Cfrac%7B1%7D%7B2%7D%5Ctimes%20-%5CDelta%20H_2%2B%5Cfrac%7B1%7D%7B2%7D%5Ctimes%20-%5CDelta%20H_3)
![\Delta H=(-605)+\frac{1}{2}\times (996)+\frac{1}{2}\times (638)](https://tex.z-dn.net/?f=%5CDelta%20H%3D%28-605%29%2B%5Cfrac%7B1%7D%7B2%7D%5Ctimes%20%28996%29%2B%5Cfrac%7B1%7D%7B2%7D%5Ctimes%20%28638%29)
![\Delta H=212kJ](https://tex.z-dn.net/?f=%5CDelta%20H%3D212kJ)
Therefore, the
for the reaction is 212 kJ
The number of atoms in a molecule varies depending on the specific molecule formed. As a rule of thumb, a molecule must be composed of at least two atoms with no maximum amount of atoms as long as all the atoms in the molecule are bonded together somehow.
Answer:did u ever get the answer
Explanation:i have a homework to do
Do you mean an actual rate of fast or slow? It'd flow quickly.
I think Magnesium not sure because the relative atomic mass of magnesium is 24,31.