1. The problem statement, all variables and given/known data Using the atomic masses of 65Ni and 65Cu, calculate the Q-value of the β- decay of 65Ni (in MeV). Answer = c) 2.14 MeV 2. Relevant equations 65Ni -> 65Cu + e- 3. The attempt at a solution 64.9308 -> 64.9277 + 0.0005485 Products - Reactants -0.0025515 * 931.5 = 2.3767 My answer is in the same ball park but not correct. Are my equations correct?