Physics

Problem

In the fission of

^{235}\text{U}

induced by a thermal neutron,

^{235}\text{U}+n\rightarrow{}^{141}\text{Ba}+{}^{92}\text{Kr}+3n,

the atomic masses are:

^{235}\text{U}: 235.043930\,\text{u}

^{141}\text{Ba}: 140.914411\,\text{u}

^{92}\text{Kr}: 91.926156\,\text{u}

n: 1.008665\,\text{u}

With

1\,\text{u}=931\,\text{MeV}/c^{2}

, what is the approximate energy released per fission event? a)

58\ \text{MeV}

17.4\ \text{MeV}

174\ \text{MeV}

1.04\times 10^{3}\ \text{MeV}