Problem: A patient is given 0.055 µg of technetium-99m, a radioactive isotope with a half-life of about 6.0 hours. How long does it take for the radioactive isotope to decay to 3.5×10−3 g ? (Assume no excretion of the nuclide from the body.)

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A patient is given 0.055 µg of technetium-99m, a radioactive isotope with a half-life of about 6.0 hours. How long does it take for the radioactive isotope to decay to 3.5×10−3 g ? (Assume no excretion of the nuclide from the body.)

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Our tutors have indicated that to solve this problem you will need to apply the First Order Half Life concept. You can view video lessons to learn First Order Half Life. Or if you need more First Order Half Life practice, you can also practice First Order Half Life practice problems.