Answer:
Option C. 88 KJ
Explanation:
The activation energy (Ea) is the minimum energy that reactant must overcome in order for them to proceed to product.
In an energy profile diagram, the activation energy (Ea) is obtained by calculating the difference between the energy of the activation complex (i.e peak) and the energy of the reactant.
With the above information, we shall determine the activation energy (Ea) of the reaction above as follow:
Activation complex = 268.74 KJ
Energy of reactant = 180.74 KJ
Activation energy (Ea) =?
Activation energy = Activation complex – Energy of reactant
Activation energy = 268.74 – 180.74
Activation energy = 88 KJ
Therefore, the activation energy (Ea) of the reaction is 88 KJ
Answer:
Hope it helped
Explanation:
For neutral atoms, the number of valence electrons is equal to the atom's main group number. The main group number for an element can be found from its column on the periodic table. For example, carbon is in group 4 and has 4 valence electrons. Oxygen is in group 6 and has 6 valence electrons.
The answer to this would be d. Precipitation patterns .