A sample of Iodine-131 has an activity rate of 45 µCi. What is the mass of the sample?
A sample of Iodine-131 has an activity rate of 45 µCi. What is the mass of...
Find the activity of a sample containing 4.52 1014 iodine-131 nuclei (T1/2 = 8.0 days).
The half-life of 131I is 8.04 days. On a certain day, the activity of an iodine-131 sample is 6.36 mCi. What is its activity 37.8 days later?
Iodine-131 is administered orally in the form of NaI(aq) as a treatment for thyroid cancer. The half-life of iodine-131 is 8.04 days. How much time is required for the activity of a sample of iodine-131 to fall to 17.5 percent of its original value? ____days Nitrogen-13 is used in tracers injected into the bloodstream for positron emission tomography (PET). The half-life of nitrogen-13 is 10.0 minutes. If you begin with 45.1 mg of this isotope, what mass remains after 27.2...
A 0.050 mg dose of iodine-131 was administered to a patient to treat hyperthyroidism. What is the remaining mass after 32.4 days? The half-life of iodine-131 is 8.1 days.
A patient is injected with 8.08 uCi of radioactive iodine-131 with a half-life of 8.02 days. Assuming that 90.0% of the iodine ultimately finds its way to the thyroid, what decay rate (or activity) do you expect to find in the thyroid after 23.5 days? decay rate: иСі
Iodine-131, t_1/2 = 8.0 days, is used in diagnosis and treatment off thyroid gland diseases. If a laboratory sample of iodine-131 initially emits 9.95 times 10^18 beta particles per day, how long will it take for the activity to drop to 6.22 times 10^17 beta particles per day?
Iodine-131 has a half life of 2.2 × 10-2 year. How long will it take to reduce a 196 g sample of 131I to 82 g 131I?
20) A 0.500-g sample of iodine-131 is obtained by a hospital. How much will remain after a period of one week? The half-life is 8.07 days.
20) A 0.500-g sample of iodine-131 is obtained by a hospital. How much will remain after a period of one week? The half-life is 8.07 days.
A sample of iodine has a mass of 36.5 grams. How many I atoms are there in the sample? How many I2 molecules are there in the sample? molecules A sample of chlorine has a mass of 37.0 grams. How many atoms are there in the sample? How many Cl2 molecules are there in the sample?