Question

Conversions and Half-Life 1. The recommended dosage of iodine-131 is 4.20 µCi/kg body weight. How many microcuries of iodine-131 are needed for a 70.0 kg patient with hyperthyroidism? 2. If a patient weighs 175 pounds and there are 2.205 pounds for every kilogram, how much of radioisotope iodine-131 will this patient require? 3. How many disintegrations per second correspond to an activity of 2.00 microcuries? 4. Radioactive iodine-131 has a half-life of 8 days. If a dose with an activity of 300 mCi is given to a patient today, about how much activity will be present after 32 days? 5. If the amount of radioactive phosphorus-32 in a sample decays from 120 mg to 30 mg over a period of 28 days, what is the half-life of phosphorus-32?

          Conversions and Half-Life

1. The recommended dosage of iodine-131 is 4.20 µCi/kg body weight. How many microcuries of iodine-131 are needed for a 70.0 kg patient with hyperthyroidism?

2. If a patient weighs 175 pounds and there are 2.205 pounds for every kilogram, how much of radioisotope iodine-131 will this patient require?

3. How many disintegrations per second correspond to an activity of 2.00 microcuries?

4. Radioactive iodine-131 has a half-life of 8 days. If a dose with an activity of 300 mCi is given to a patient today, about how much activity will be present after 32 days?

5. If the amount of radioactive phosphorus-32 in a sample decays from 120 mg to 30 mg over a period of 28 days, what is the half-life of phosphorus-32?

Conversions and Half-Life

1. The recommended dosage of iodine-131 is 4.20 µCi/kg body weight. How many microcuries of iodine-131 are needed for a 70.0 kg patient with hyperthyroidism?

2. If a patient weighs 175 pounds and there are 2.205 pounds for every kilogram, how much of radioisotope iodine-131 will this patient require?

3. How many disintegrations per second correspond to an activity of 2.00 microcuries?

4. Radioactive iodine-131 has a half-life of 8 days. If a dose with an activity of 300 mCi is given to a patient today, about how much activity will be present after 32 days?

5. If the amount of radioactive phosphorus-32 in a sample decays from 120 mg to 30 mg over a period of 28 days, what is the half-life of phosphorus-32?

Added by Danny B.

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