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Sagot :
Answer:
25kJ
Explanation:
Given the initial energy to be 30kJ
The energy change from the initial energy to the peak energy = (65-30) kJ
= 35kJ
since the second energy change was a drop in energy it is regarded negative
= (55-65)
= -10kJ
Therefore total energy change
= (35-10)kJ
= 25kJ
From the statements in the question, the enthalpy change is 25 kilojoules
The enthalpy of a reaction
The enthalpy change of reaction is defined as the difference between the energy of the products and the energy of the reactants.
Now we can see from the statements in the question that the energy of the reactants is 30 kJ while that of the products is 55 kilojoules hence the enthalpy change for the reaction is; 55 kilojoules - 30 kilojoules = 25 kilojoules
Learn more about enthalpy: https://brainly.com/question/13805601
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