186 Re is used in the treatment of bone cancer. The half-life of 18° Re is 3.72 days. If you begin with 1.72 µg of this rhenium isotope, what mass (in µg) remains after 18.6 days? ug

Q: Strontium-90 is one of the radioisotopes released in the Chernobyl nuclear plant accident. The…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: Copper-64 is used in the form of copper acetate to study brain tumors. It has a half-life of 12.8…

A: Since we know that radioactive decy follow first order kinetics  So to solve this problem we will…

Q: Phosphorus-32, a radioisotope used in the treatment of leukemia, has a half-life of 14.3 days. If a…

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Q: Tritium (3H) is used in glowing "EXIT" signs located where there is no electricity for lightbulbs.…

A: Provided half life of 3H =12.26 year Provided time(t)=65.2 years The rate constant when  half life…

Q: Phosphorus-32 (P-32, Z=15), a radioisotope used in the treatment of leukemia, has a half-life of…

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Q: Although most natural potassium nuclei are stable K (93.3%) or **K (6.7%) nuclei, about 0.0117% are…

A: Potassium exists in nature in form of two isotopes : 1. 39K ; Abundance = 93.3 %  2. 41K ; Abundance…

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: 6. Iodine – 131 is used in the form of sodium iodide to treat cancer of the thyroid. The isotope has…

A: half - life = t1/2 = ln 2λ Given that,t1/2 = 8.04 days Ao = 25 mg t = 32.2 days

Q: Iodine-131 used to treat hyperthyroidism, has a half-life of 8.04 days. For a sample containing 10.0…

A: Half life time = 8.04 days  Initial mass = 10.0 μg  Time = 32.2 days Mass remain after 32.2 days = ?…

Q: 18° Re is used in the treatment of bone cancer. The half-life of 180 Re is 3.72 days. If you begin…

A: Given: Half-life of isotope = 3.72 days. The initial mass of isotope =1.76 µg And time passed = 18.6…

Q: Strontium-90 is present in the fallout produced by nuclear weapons testing in the atmosphere. Sr-90…

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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: The half-life of the radioactive isotope radon-222 is 3.82 days. How long will it take for the mass…

A: Recall the following expression to calculate required time of radon-222 to decay from 93.2…

Q: The half-life for gallium-67, a radioisotope, is 78.25 hours. How much of a 56.7 sample of…

A: Given datas ;  t1/2 = 78.25 hrs. [A]0 = 56.7 mg  [A]t = ?  t = 359 hrs.  t/t1/2   = 359 hrs / 78.25…

Q: The half-life of the radioactive isotope phosphorus-32 is 14.3 days. How many days does it take for…

A: The equation for 1st order decay is:

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

A: Given-> Half life = 78.2 hours Initial amount = 44.2 mg Time = 97.0 hours

Q: what mass remains after 28.5 days have passed?

A:

Q: Strantium 90 is a major component of the detonation of nuclear explosives, it is particularly…

A: Radioactive substances disintegrate in nature due to their instability. The disintegration process…

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

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Q: The radioactive isotope, used in the diagnosis of tumors, has a biological half-life of 47 hours. If…

A: Given  Half life ( t1/2 )         = 47 hour  Time ( t )                  = 26 hour  initial quantity…

Q: 15) A sample of radioactive material contains 1030 atoms. If the half-life is 6hours, then, the…

A: Radioactive decay is the decay in which an unstable nucleus is broken into a number of smaller…

Q: The half-life of the radioactive isotope polonium-214 is 1.64x104 seconds. How long will it take for…

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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: The half-life of protactinium-234 is 6.69 hours. What fraction of a given amount remains after 26.76…

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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: The half-life of the radioactive isotope magnesium-20 is 0.600 seconds. How long will it take for…

A: Half-life is the time required for a quantity to be reduced to half of its original value. The…

Q: The radioactive isotope 64Cu is used in the form of copper(II) acetate to study Wilson's disease.…

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Q: Strontium-90 is one of the radioisotopes released in the Chernobyl nuclear plant accident. The…

A:

Q: 18.6% of a sample of zinc-65 decays in 64.4 d, what is the half-life of this isotope (in days)?

A: We know that, for any radioactive decay, the rate constant is  K = (1/t) ln (No/ N) Where  K = rate…

Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

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Q: 3. One of the radioactive nuclides formed in nuclear power plants is hydrogen-3, called tritium,…

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Q: The radioisotope phosphorus-32 is used in tracers for measuring phosphorus uptake by plants. The…

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Q: Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in…

A: Given: Mass of Na332PO4 = 175 mg = 0.175 g                                       (Since 1 g = 1000…

Q: Consider the radioisotope ²³⁵U (half life = 7.04 × 10⁸ years). What is the first order rate constant…

A: The reaction is given first order. And half life = 7.04 X 108 years

Q: 17. Tritium, (3H) is used in glowing “EXIT" signs located where there is no electricity for light…

A:

Q: Americium-241 is widely used in smoke detectors. The radiation released by this element ionizes…

A: Answer:- this question is answered by using the simple concept of nuclear chemistry which involves…

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

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Q: Phosphorus-32 is a commonly used radioactive nuclide in biochemical research, particularly in…

A: The loss of elementary particles from an unstable nucleus results in the transformation of the…

Q: How much time is required for 84% of the isotope to decay?

A: Given: Iodine-131, which is used to treat thyroid cancer, has a half-life of 8.04 days. The…

Q: Chromium-51 nuclide is used in studies to evaluate the lifespan of red blood cells and bone marrow…

A: Chromium-51 is a commonly used radionuclide with a half-life of 27.7 days, emitting gamma rays with…

Q: The half-life of the radioactive isotope 137Cs is 30.17 years. How long does one have to wait until…

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Q: A 120-mgmg sample of technetium-99 mm is used for a diagnostic test. If technetium-99 mm has a…

A: Solution -

Q: Iodine-131 is often used in nuclear medicine to obtain images of the thyroid  If you start with…

A: Half-life is the time required for a quantity to reduce to half of its initial value. we represent…

Q: Iodine-131 is a radioactive isotope. After 2.00 days, 84.2% of a sample of 13I remains. What is the…

A: Iodine- 131 is an radioactive isotope. Time = 2 days Final concentration of 131l  = 84.2% of sample…

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

A:

Q: The radioactive isotope Pu-238, used in pacemakers, has a half-life of 87.7 years. If 1.9 milligrams…

A: Given : Half - life = 87.7 years Initial Pu-238 = 1.9 mg

Q: 18° Re is used in the treatment of bone cancer. The half-life of 18° Re is 3.72 days. If you begin…

A: Half life time = 3.72 days Initial amount = 1.93 ug  Time = 18.6 days  Mass remains after 18.6 days…

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

A: Here given, The half-life of gallium-67 (t1/2) = 78.2 hours Time (t) = 198 hours Initial amount (N0)…

Q: 2. Tellurium-123 is a radioactive isotope occurring in natural tellurium. The decay constant is 1.7…

A: