Question: Physicists blow stuff up better than anyone else. The measure for gauging the usefulness of blowing something up is the fraction of initial rest mass

Physicists blow stuff up better than anyone else. The measure for gauging the usefulness of blowing something up is the fraction of initial rest mass converted into energy in the process. Looking up the necessary data, calculate this fraction for the following processes:
a) Chemical combustion of hydrogen: 2H2 + O2 → 2H2O
b) Nuclear fission: n + 23592U → 8936Kr + 142-56Ba + 5n
c) Thermonuclear fusion: 63Li + 21H → 74Br + n
d) Decay of free neutron: n → p + e- + e
e) Decay of muon: μ- → e- + vμ + e
f) Electron-positron annihilation: e- + e+ → 2γ

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