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

The intermediate balanced chemical reaction will be,
(1)

(2)

(3)




Therefore, the
for the reaction is 212 kJ
B, sharing electrons is a characteristic of covenant bonds.
The area is 60.2, to find area it's length times width.
The atomic number is usually shown at the top of the element (on periodic table)
(I’ve attached an image for you to understand visually)
Answer: 26