1. The problem statement, all variables and given/known data An alpha (α) particle is the nucleus of a 4He atom and consists of 2 neutrons and two protons bound together. Let's take apart an α particle, step by step, looking at the energy required at each step. To do so, we may want to use the following atomic masses: 4He: 4.0026 u 3H: 3.01605 u 2H: 2.0141 u 2H: 1.00783 u p: 1.00728 u e: 0.000548 u n: 1.00867 u a) What is the energy required to remove the first proton? 2. Relevant equations m=mf-mi E=mcsquared 3. The attempt at a solution mi=4.0026 u mf=3.01605 u + 1.00728 u mf=4.02333 u m=mf-mi m=4.02333 u - 4.0026 u m=0.02073 u E=mcsquared E=(0.02073 u)((931.5 Mev/csquared)/u)(csquared) E=19.309995 Mev Did I use the right masses?