In: Physics
How much energy, in Joules, is contained in the mass of a Helium nucleus? You may need to look up the mass of a Helium nucleus. Include references for any numbers you quote. What fraction of mass is released as energy when Hydrogen fuses to Helium in the sun?
Del M is the difference in mass. Negative Del M means mass of reactant is more and thus energy corresponding to that mass will be released.