Phosphorus-32 (P-32, Z=15), a radioisotope used in the treatment of leukemia, has a half-life of 14.3 days. If a sample contains 8.0 mg of P-32, how many milligrams of P- 32 remain after 42.9 days? A. 4.0 mg B. 2.0 mg C. 3.0 mg D. 0.50 mg E. 1.0 mg

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

A: Given  Half life of Lead - 196     = 37 min  Initial Amount (A)0          =  64 mg Remaining Amount…

Q: If you accidentally spill phosphorus-32 onto your shoe, how long would it take before 99.9% of the…

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Q: Technetium-99m, a metastable state of technetium-99 commonly used in nuclear medicine, has a…

A:

Q: a radioactive isotope of hydrogen, has a half-life of 12.4 years. Of an initial sample of 33 grams,…

A: Reaction in which rate is linearly depend upon one reactant is known as first order reaction.

Q: 120 mg sample of technium 99m is used for a diagnostic test. if a technium 99m has a half-life of…

A: Given- Initial mass = 120 mg Half life = 6.0 hrs To find- milligrams of the technetium 99M sample…

Q: Fluorine-18 is an isotope used in PET scans. If a researcher has 1.5 micrograms of 18F, how long…

A: As radioactive decay is a first-order process and can be described in terms of either the…

Q: [Refere A 1.14 g sample of a radioactive isotope decays to 0.87 g in 36.3 hr. What is the half-life…

A: Given  Initial Amount [ A ]0   = 1.15 gram  Remaining Amount [ A ]    = 0.87 gram  Time ( t ) = 36.3…

Q: Technetium-99m, an important radionuclide in medicine, has a half-life of 6.0 hours. What percentage…

A: Formula for radioactive decay is given as,

Q: 15. A mammoth skeleton has a carbon-14 decay rate of 0.48 disintegrations per minute per gram (0.48…

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Q: An ancient skull has a carbon-14 decay rate of 0.75 disintegrations per minute. The living organisms…

A: Chemical changes in which amount of species taken varies or changes linearly with time are said to…

Q: The half-life of 129I is 1.72 x 107 years. Consider a sample that contains 2.39 x 106 atoms of this…

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Q: Radioisotope X has a half-life of 4.0 h. Based on the figure below, if the original sample of the…

A: Half life (t1/2) :-  The time required for the concentration of reactant to reduce to half of its…

Q: Technetium-99 (half-life = 6.0 h) is used in medical imaging. How many half-lives would go by in 18…

A: technetium - 99 have half life = 6 hours

Q: 1. A lab tech prepares 50.0 mg of I-123 on Tuesday, how many mg will remain 39 hours later if the…

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Q: You have a sample of Bismuth-212 to prepare for an upcoming medical test.  This isotope has a…

A: The radioactivity follows first-order kinetics. The half-life relates to the rate constant, k for…

Q: After 42 years, what mass remains of a 200.0 g sample of a radioactive isotope with a half-life of…

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Q: Hydrogen-3 has a half-life of 12.3 years. How many years will it take for 890.0 mg 'H to decay to…

A:

Q: A piece of fossilized wood has a carbon-14 radioactivity that is 1/4 that of new wood. The half-life…

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

A:

Q: " Ca is used in the study of bone formation. The half-life of Ca is 4.54 days. If you begin with…

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Q: 186 Re is used in the treatment of bone cancer. The half-life of 186 Re is 3.72 days. If you begin…

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Q: Chromium-51 is a radioisotope that is used to assess the lifetime of red blood cells The half-life…

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Q: Q#3 Iodine-123, used in the treatment of thyroid, brain, and prostate cancer, has a half-life of…

A: Given :  Half life(t1/2) = 13.2 hr  Given time (t) = 26.4 hr  Mass of sample = 64 mg  t1/2=0.693K…

Q: Phosphorus-32 is a radioactive isotope used as a tracer in the liver. How much phosphorus-32 was…

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

A: Given half life = 8.04 days time = 12.7 days initial mass = 31.1 mg

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

A:

Q: Cesium-137 is part of the nuclear waste produced by uranium-235 fission. The half-life of…

A: Half-life of Cs-137 and initial mass, from which amount of Cs-137 left after 90.6 years.

Q: isotope of technetium (technetium-99m), has a half-life of 6 hours. A hospital has a sample which…

A: Half life = 6 hoursInitial amount of technetium-99m = 36 mgTime = 12 hours.

Q: At 7:00 AM a hospital uses its cyclotron to make 1.00 milligram of the isotope F-18 for use as a…

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: Radon has been the focus of much attention recently because it is often found in homes. Radon-222…

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Q: Isotope X has a half-life of 71.8 years. If a sample initially contains 676. mg of X, what mass of X…

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Q: A radioactive sample contains 2.90 gg of an isotope with a half-life of 3.8 days How much of the…

A: Given- Initial mass = 2.90 g Half life = 3.8 days To find- mass of the isotope in grams remaining…

Q: chemist determines that a sample of petrified wood has a decay rate of 6.00 counts/minute-gram. What…

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Q: You have a fresh sample of 1000 grams of indium-131 isotope which has a half-life of 8.05 days. How…

A: According to the question, Given initial mass  of indium-131 isotope = 1000 g   The  Half life (t12)…

Q: lodine-131 is a radionuclide that is frequently used in nuclear medicine. Among other things, it is…

A: Sample mass of Iodine - 131 initially = 0.16 gram Half life of iodine-131 = 8 days We know that…

Q: 5. TI-201 can be used to assess the damage to the heart muscle in a person who has suffered a heart…

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Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. How long would it take a sample to…

A: Given that - Hydrogen-3 is tritium which is a radioactive isotope with half life = 12.3 years…

Q: You start with 600.0 milligrams of radioactive element with a half-life of 85 days. How many days…

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

A: Radioactive decay is always a first order reaction. According to the first order radioactive decay…

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

A:

Q: 137 Cs has a half-life of 30.2 years. How many years will it take for a 100.0-g sample to decay to…

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Q: The radioactive isotope Pu-238, used in pacemakers, has a half-life of 87.7 years. If 1.6 milligrams…

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.