Iodine – 125 emits gamma rays when it decays to Tellerium-125 and has a half-life of 60 days. If a 0.020 g pellet of iodine – 125 is implanted into a prostate gland, how much iodine – 125 remains there after one year?

Q: The half-life of Phosphorus-32 is 14.3 days. If you start with 100 grams of it, how long will it…

A: Half life of a first order reaction is given by , t1/2=0.693k Write the expression for first order…

Q: Iodine -125 emits gamma rays when it decays to Tellerium -125 and has a half life of 60 days. If…

A: Given, half life of Iodine -125 t1/2 = 60 days            initial mass of Iodine -125 = 0.020 g The…

Q: One of the nuclides in spent nuclear fuel is UU-235, an alpha emitter with a half-life of 703…

A: Given , half life of U-235 = 703 million years. We need to find the time at which the amount of…

Q: Mercury-210 has a half-life of 10 minutes. How many minutes will it take for a sample of mercury-210…

A: The objective of the question is to find out the total time it will take for a sample of Mercury-210…

Q: While harder to access, another radioactive isotope of technetium, Tc-93, has a half-life of 2.73…

A: Solution Tc ninety nine m is wide used for diagnostic and therapeutic functions. It emits gamma…

Q: what is the na-me, 1/2, 01 12 = day:

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Q: Cobalt-60 has a half-life of 5.27 years and is used in cancer treatment. If a patient ingests 20.0 g…

A: Since the decay reactions are first order reactions hence the relationship between the time and mass…

Q: The half-life of tritium is 12.5 years. How much will remain after exactly 100 years if you start…

A:

Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. How…

A: We have to predict the time taken.

Q: Cobalt-60 is a beta emitter with a half-life of 5.3 years. Approximately what fraction of cobalt-60…

A: The half life of cobalt-60 is = 5.3 year The fraction of cobalt-60 atoms will remain in a particular…

Q: Iodine-125 has a half-life of 60.4 days and is used in radiation therapy to treat prostate cancer…

A: Since the decay reactions are first order reactions Hence we can say  1) Half life = ln(2) / K 2)…

Q: A hospital needs 0.8 g of 133Xe for a lung-imaging test. If it takes 7 days to receive the shipment,…

A: We have to calculate the amount to be ordered.

Q: lodine-131 is administered orally in the form of Nal(aq) as a treatment for thyroid cancer. The…

A: The half life of the iodine -131 = 8.04 daysThe time required for sample to reduce to 6.14 % of…

Q: the half life of iodine-131 is 8 days, after how many days will a sample of it decay to 70% of its…

A: As we know,  Radioactive decay follows 1st order kinetics.Integrated rate law equation for 1st order…

Q: Iodine-131 has a half-life of 8 days. What fraction of the original sample would remain at the end…

A: Half life is the period at which concentration of reactant reduces half of its original value.

Q: Radioactive iodine (Iodine-131) has a half-life of 8.04 days. How long will it take for 150g of…

A: Given: The half-life of Iodine-131, t12 = 8.04 days. The initial amount of Iodine-131, (N0) = 150 g.…

Q: The half-lives of different radioisotopes are given in the table. Radioisotope Half-life (min)…

A: Answer: Since, nuclear reactions are first order reactions, therefore to solve this question we will…

Q: A rock found in the Australian Outback contains 438 g of Pb-206 for every 1.00 g of U-238. How old…

A: The objective of the question is to determine the age of a rock based on the ratio of Pb-206 to…

Q: Oxygen-15 is an isotope of oxygen that is used in the medical procedure called a PET scan. The…

A: Given that, the half-life of oxygen-15 is t1/2 = 2 min. A hospital needs 1 g of oxygen-15. The…

Q: e uranium decay series from U-238 to stable lead (Pb-206) is: U → 234Th → 234Pa → 234U → 230 Th →…

A:

Q: A sample of coral has a carbon-14 content of 12.5% the value of living coral.  If the half-life of…

A: Given  Half life of Carbon - 14 = 5730 years Remaining amount   = 12.5 %  Time ( t ) = ?

Q: Iodine-125 (125I) is used to treat, among other things, brain tumors and prostate cancer. It decays…

A:

Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. What is the half-life of…

A: Given, t = 190 days t1/2 = ?

Q: How long will it take a radioactive sample of iodine-131 (half-life 8.07 dd) to lose 98.4 %% of its…

A: The objective of this question is to determine the time it will take for a radioactive sample of…

Q: Calcium-45 has a half-life of 162.61 days. If 4 mg of this isotope remains after 300 days, what is…

A: Radioactive decay follows first-order kinetics. The half-life of the first-order reaction does not…

Q: Cobalt-60 is used extensively in medicine as a source of g-rays. Its half-life is 5.27 years. How…

A: Given Half life ( t1/2 )   = 5.27 year  Initial Activity ( A0 )  = 100 %  Remaining amount ( At ) =…

Q: Iodine‑125 (I125I125) is used to treat, among other things, brain tumors and prostate cancer. It…

A: Answer is as follows

Q: Strontium-90, a beta emitter, has a half-life of 28.1 yr. If 29.1 mg of 90Sr were incorporated into…

A:

Q: Radioactive Radon-222 gas (222Rn) occurs naturally as a product of uranium decay. The half-life of…

A:

Q: Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 × 1010 years. What is the…

A:

Q: Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 x 1010 years. What is the…

A:

Q: If the half-life of iodine-131 is 8.10 days, how long will it take a 50.00 g sample to decay to 6.25…

A: Given - Half life of iodine -131 =8.1 0 days  Initial weight of sample= 50.00 gram  Final weight of…

Q: Iodine-125 (¹251) is used to treat, among other things, brain tumors and prostate cancer. It decays…

A:

Q: Polonium-211 has a half-life of 12 years. How much of a 32 gram sample remains after 60 years?

A: We know nuclear decay follows first-order reaction so- relation between decay constant and half life…

Q: Ruthenium-106 (106Ru) is used to treat melanoma in the eye. This isotope decays by β– emission with…

A: Radioactive decay is identified as a process during which an unstable nuclide of an atom changes to…

Q: PET scans require fluorine-18, wich is produced in a cyclotron and decays with a half-life of 1.83…

A: Given data,Half life(t1/2)=1.83hoursSpeed=60.0miles/hrLet initial concentration of F-18 be 100Final…

Q: Indium-111 has an effective half-life of 2.5 days. If 15.0 mCi dose is given, how much ¹¹¹|n will be…

A:

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.