Consider the fission of ${}^{238}_{92}\mathrm{U}$ by fast neutrons. In one fission event, no neutrons are emitted and the final end products, after the beta decay of the primary fragments are ${}^{140}_{58}\mathrm{Ce}$ and ${}^{99}_{44}\mathrm{Ru}$. Calculate Q for this fission process. The relevant atomic and particle masses are: m $({}^{238}_{92}\mathrm{U})$ = 238.05079 u, m $({}^{140}_{58}\mathrm{Ce})$ = 139.90543 u , m $({}^{99}_{44}\mathrm{Ru})$ = 98.90594 u