Red giants derive their energy not from nuclear ructions involving hydrogen, but by reactions involving helium....

Red giants derive their energy not from nuclear ructions involving hydrogen, but by reactions involving helium. Specifically, a reaction where 3 helium nuclei change into 1 carbon nucleus. The mass of a helium nucleus is 6.645x10-27 kg, and the mass of a carbon nucleus is 1.9922x10-26 kg. Use the data to calculate: (1) the mass lost in one such reaction, (2) the energy released in one such reaction, (3) the energy released when a kilogram of helium fuses to become carbon, (4) the ratio between this and the amount of energy released when a kilogram of hydrogen fuses to become helium, and finally (5) the length of time a 10 solar luminosity star of 1 solar mass could continue shining if it were powered by this reaction.

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genius_generous answered 1 year ago

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