1A. Thallium-201 is used medically to diagnose heart problems. The half-life of thallium-201 is 72.9 hours....

1A. Thallium-201 is used medically to diagnose heart problems. The half-life of thallium-201 is 72.9 hours. How much time is required for the activity of a sample of thallium-201 to fall to 13.1 percent of its original value? ____ hrs

1B. Chromium-51 is a radioisotope that is used to assess the lifetime of red blood cells The half-life of chromium-51 is 27.7 days. If you begin with 49.5 mg of this isotope, what mass remains after 29.1 days have passed? ____mg

1C. Iodine-131 is administered orally in the form of NaI(aq) as a treatment for thyroid cancer. What is the half-life of iodine-131 if 14.1 days are required for the activity of a sample of iodine-131 to fall to 29.7 percent of its original value?___days

Expert Solution

queen_honey_blossom answered 2 years ago

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