Question
Asked Jan 7, 2020
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 When a positron and an electron annihilate one another, the resulting mass is completely converted to energy. Calculate the energy associated with this process in kJ/mol. 

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Expert Answer

Step 1

The reaction for annihilation of positron with an electron is represented as follows:

Chemistry homework question answer, step 1, image 1
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Step 2

First mass defect is calculated using the difference of atomic mass of the reactant multiplied by their stoichiometric coefficients and atomic mass of products multiplied by their stoichiometric coefficients.

Thus, the mass defect is calculated as follows:

Chemistry homework question answer, step 2, image 1
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Step 3

Now the energy associated with the pro...

Chemistry homework question answer, step 3, image 1
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