1. The problem statement, all variables and given/known data A helium atom has a rest mass of He = 4.002603u. When disassembled into its constituent particles (2 protons, 2 neutrons, 2 electrons), the well-separated individual particles have the following masses: p = 1.007276u, n= 1.008665u, e = 0.000549u. How much work is required to completely disassemble a helium atom? (Note: 1 u of mass has a rest energy of 931.49 MeV.) 2. Relevant equations E=mc^2 3. The attempt at a solution 2(1.007276u + 1.008665u + 0.000549u) = 4.03298u 4.03298u - 4.002603u = .030377u E = (0.030377u)*(931.49 MeV/u)*(3.0*10^8)^2 E = 2.5466*10^18 MeV *I tried using c = 2.9979*10^8, however it is still wrong.