If I have a sample of I(131) with a half life of 8.04 days and an...
If I have a sample of I(131) with a half life of 8.04 days and an initial activity of 0.5 micro-curies. How many nuclei of I(131) are contained in this sample?
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If I have a sample of I(131) with a half life of 8.04 days and
an...
The half-life of 131I is 8.04 days. On a certain day, the activity of an iodine-131...
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?
The half-life of 131I is 8.04 days. (a) Convert the half-life to seconds. s (b) Calculate...
The half-life of 131I is 8.04 days. (a) Convert the half-life to seconds. s (b) Calculate the decay constant for this isotope. s−1 (c) Convert 0.650 μCi to the SI unit the becquerel. Bq (d) Find the number of 131I nuclei necessary to produce a sample with an activity of 0.650 μCi. 131I nuclei (e) Suppose the activity of a certain 131I sample is 7.10 mCi at a given time. Find the number of half-lives the sample goes through in...
The half-life of 131I is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the...
The half-life of 131I is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the decay constant for this isotope. (c) Convert 0.350 μCi to the SI unit the becquerel. (d) Find the number of 131I nuclei necessary to produce a sample with an activity of 0.350 μCi. (e) Suppose the activity of a certain 131I sample is 6.10 mCi at a given time. Find the number of half-lives the sample goes through in 40.2 d and the activity...
3. Iodine-131, which is used to treat thyroid cancer, has a half-life of 8.04 days. How...
3. Iodine-131, which is used to treat thyroid cancer, has a half-life of 8.04 days. How much time is required for 68% of the isotope to decay? a. 13 days b. 7 days c. 43 days d. 53 days e. 4 days
The half-life of 52Mn is 5.59 days. (a) Convert the half-life to units of seconds. (b)...
The half-life of 52Mn is 5.59 days. (a) Convert the half-life to units of seconds. (b) What is the decay constant (in s−1) for this isotope? (c) Suppose a sample of 52Mn has an activity of 0.510 µCi. What is this activity expressed in the SI unit of becquerels (Bq)? (d) How many 52Mn nuclei are needed in the sample in part (c) to have the activity of 0.510 µCi? E. Now suppose that a new sample of 52Mn has...
1. The half-life of an isotope of phosphorus is 14.2 days. If a sample contains 3.96e16...
1. The half-life of an isotope of phosphorus is 14.2 days. If a sample contains 3.96e16 such nuclei, determine its activity.? 2. A 234-mCi sample of a radioactive isotope is purchased by a medical supply house. If the sample has a half-life of 17.4 days, how long will it keep before its activity is reduced to 28.9 mCi?
The ridioisotope iodine - 131 (half-life = 8 days) is received from a medical supplier in...
The ridioisotope iodine - 131 (half-life = 8 days) is received from a medical supplier in a solution such that 0.5 cc of the solution has enough activity for injection for a certain organ scan at the time of supply. If it is impractical to use more than 8 cc of the solution per scan, what is the useful life of the solution?
Q. 86 and 87 i. E) 1.8 x 104 mCi 86) Sodium-24 has a half-life of...
Q. 86 and 87
i. E) 1.8 x 104 mCi 86) Sodium-24 has a half-life of 15 hours. How many hours is three half-lives? A) 60 hours B) 45 hours C) 30 hours D) 15 hours E) 7.5 hours 87) Iodine 131 has a half-life of 8.0 days. An I-131 sample has an initial activity of 32 m What is the activity after 24 days? A) 96 mCi B) 16. mCi C) 8.0 mCi D) 4.0 mCi E) 2.0 mCi
If you start with a 30 g sample of I-131, how many grams of I-131 would...
If you start with a 30 g sample of I-131, how many grams of I-131 would there be after 16 days? The half-life of I-131 is 8.02 days. Th-232 undergoes decay by emitting the following particles: alpha, beta, beta, alpha, alpha, alpha, alpha, beta, beta, alpha. What is the resulting isotope? Write out the entire decay series.
1-2 lodine-131 is often used in nuclear medicine to obtain images of the thyroid. If you start with 4.0x10 lodine-131 atoms, how many are left after approximately 1 month? 1-131 has a half- life o...
1-2
lodine-131 is often used in nuclear medicine to obtain images of the thyroid. If you start with 4.0x10 lodine-131 atoms, how many are left after approximately 1 month? 1-131 has a half- life of 8.0 days. 2) Radium-223 decays with a half-life of 11.4 days. How long will it take for a 0.240-mol sample of radium to decay to 1.50x 10 mol?
lodine-131 is often used in nuclear medicine to obtain images of the thyroid. If you start with...
3. Iodine-131, which is used to treat thyroid cancer, has a half-life of 8.04 days. How much time is required for 68% of the isotope to decay? a. 13 days b. 7 days c. 43 days d. 53 days e. 4 days
Q. 86 and 87
i. E) 1.8 x 104 mCi 86) Sodium-24 has a half-life of 15 hours. How many hours is three half-lives? A) 60 hours B) 45 hours C) 30 hours D) 15 hours E) 7.5 hours 87) Iodine 131 has a half-life of 8.0 days. An I-131 sample has an initial activity of 32 m What is the activity after 24 days? A) 96 mCi B) 16. mCi C) 8.0 mCi D) 4.0 mCi E) 2.0 mCi
1-2
lodine-131 is often used in nuclear medicine to obtain images of the thyroid. If you start with 4.0x10 lodine-131 atoms, how many are left after approximately 1 month? 1-131 has a half- life of 8.0 days. 2) Radium-223 decays with a half-life of 11.4 days. How long will it take for a 0.240-mol sample of radium to decay to 1.50x 10 mol?
lodine-131 is often used in nuclear medicine to obtain images of the thyroid. If you start with...
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