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can someone help me with the followng 2 questions, i am so confuzed and have no idea how to start and what formulas to use.

1. the minimum mass of a star is 0.08 solar mass or 80 jupiter masses. If the fuel that powered stars was helium instead of hydrogen would the minimum mass of stars be more, les or still be 0.08 sollar mass? (hint: think of the number of protons in nuclei)

2. the sun emits as much energy as 3.9 *10^24 100- Watts light-bulbs (that’s a whole lot of light bulbs!) every second. We call that number its luminosity. Give that the radius of the sun is constant in time, how much energy is produced in the Sun every second? Is it more than, less than or equal to its luminosity? Justify your answer ( no calculations necessary)