[填空题]
When a uranium nuclev3 vnq4b*z4jj2ohe xh6 7u bz1us at mhivcm +/r )ist1 tp*/rest breaks apart in the process known as fission in a nuclea t sm1*v/+triim/ch)pr reactor, the resulting fragments have a total kinetic energy of about 200 MeV. How much mass was lost in the process? $\bigtriangleup m$ = $ \times 10^{-28} \, \text{kg}$
