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32.5 Exercise 9

Avg difficulty 2.5

Verify that the total number of nucleons, total charge, and electron family number are conserved for each of the fusion reactions in the proton-proton cycle in

1H +1H →2H+e++ve,^{1} \text{H } + ^{1} \text{H } \rightarrow ^{2} \text{H} + e^{+ } + v_{\text{e}} ,
1H+2H→3He +γ,^{1} \text{H} + ^{2} \text{H} \rightarrow ^{3} \text{He } + \gamma ,

and

3He +3He→4He+1H+1H.^{3} \text{He } + ^{3} \text{He} \rightarrow ^{4} \text{He} + ^{1} \text{H} + ^{1} \text{H} .

(List the value of each of the conserved quantities before and after each of the reactions.)

OpenStax College Physics 2e, 32.5 Fusion, exercise 9

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.