1. The problem statement, all variables and given/known data How much energy, in joules, is released when one mole of helium-4 nuclei is formed from its individual protons and neutrons? 2. Relevant equations 2p + 2n ----> He-4 (p is proton n is neutron) 3. The attempt at a solution Book sucks at explaining so Im not quite sure where to start. Calculate energy for each nucleon maybe?