Part A The nuclear reaction that powers the sun is the fusion of four protons into a helium nucleus. The process involves several steps, but the net reaction is simply How much energy is released in each fusion? 4p - He + energy. The mass of a proton, to four Express your answer with the appropriate units. significant figures, is 1.673x10-27 kg, and the mass of a helium nucleus is known to be 6.644x 10-27 kg. JA AE = Value Submit Previous Answers Request Answer * Incorrect; Try Again; 5 attempts remaining Part B What fraction of the initial rest mass energy is this energy? IVO AEd ? AE = Eo Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining