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To calculate:
Calculate the energy released in each of the given reactions.
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Answer to Problem 21.70QA
Solution:
The energy released during each of the given reactions is as follows:
a.
b.
c.
d.
Explanation of Solution
1) Concept:
The reaction of formation of the sulfur isotope is given, and we are asked to find the energy released during each of the given reactions in Joules. First we need to find the mass defect between the masses of sulfur isotope and the given reactant isotopes. Due to this mass defect, the energy released can be calculated using the Einstein’s equation
2) Formulae:
i)
ii)
3) Given:
i) Mass of Nitrogen
ii) Mass of Lithium
iii) Mass of Oxygen
iv) Mass of Sulphur
v) Mass of Carbon
vi) Mass of Magnesium
vii) Mass of Helium
viii) Mass of Silicon
ix) Velocity of light
x)
4) Calculations:
a. Calculating mass defect and corresponding energy lost during the first given reaction:
The first given reaction is
First, we calculate the difference in the mass of the particles:
The mass difference in
Now, energy released during the reaction:
Thus, energy released during the first given reaction is
b. Calculating mass defect and corresponding energy lost during the second given reaction:
The given reaction is
First, we calculate the difference in the mass of the particles:
The mass difference in
Now, energy released during the reaction:
Thus, energy released during the second reaction is
c. Calculating mass defect and corresponding energy lost during the third given reaction:
The given reaction is
First, we calculate the difference in the mass of the particles:
The mass difference in
Now, energy released during the reaction:
Thus, energy released during the reaction is
d. Calculating mass defect and corresponding energy lost during the fourth given reaction:
The given reaction is
First, we calculate the difference in the mass of the particles:
The mass difference in
Now, energy released during the reaction:
Thus, energy released during the reaction is
Conclusion:
The mass defect corresponds to the amount of energy released during the reaction.
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Chapter 21 Solutions
Chemistry: An Atoms-Focused Approach (Second Edition)
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