Solved: The nuclear reaction that powers the sun is the

Chapter 36, Problem 36.108

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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 4p S 4 He + energy. The mass of a proton, to four significant figures, is 1.673 * 10-27 kg, and the mass of a helium nucleus is known to be 6.644 * 10-27 kg. a. How much energy is released in each fusion? b. What fraction of the initial rest mass energy is this energy?

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