Which statement about the mass of an electron is correct? A The mass of an electron is equal to the mass of the proton. B The ma
1 answer:
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Answer:
2.15 mg of uranium-238 decays
Explanation:
For decay of radioactive nuclide-
where N is amount of radioactive nuclide after t time, is initial amount of radioactive nuclide and
is half life of radioactive nuclide
Here ,
and
So,
so, N = 2.446 mg
mass of uranium-238 decays = (4.60-2.446) mg = 2.15 mg