1. The problem statement, all variables and given/known data Radium-226 decays with a half-life of 1.60E3 years via the process: Ra -> Rn + He + Energy (Masses : Ra = 226.025403u, Rn = 222.017570u, He - 4.002603u) How much energy, in MeV, is released in each decay? 2. Relevant equations E= mc^2 3. The attempt at a solution E of Ra - E of Rn - E of He = Energy released Energy = mc^2 - mc^2 -mc^2 E = (226.025403)(3E+8)-(222.017570)(3E+8)-(4.002603)(3E+8)= 1568700J = 9.79E+24 = 9.79E+18 MeV ????