A patient is given 0.050 ug of technetium-99m, a radioactive isotope with a half-life of about 6.0 hours. How long does it take for the radioactive isotope to decay to 1.0 x 103 ug? (Assume no excretion of the nuclide from the body.)

Q: (11) Lead-211 is a radioactive isotope with a half-life of 36.1 minutes. How long will it take for…

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Q: Phosphorus-32 is a radioactive isotope with a half-life of 14.3 d (d = days). A biochemist has a…

A: A radioactive decay follows the first order kinetics where the rate of the reaction depends on the…

Q: The half life of an isotope is 43 seconds.  How long does it take 100.00 g of that isotope to decay…

A: Given that  Initially weight of isotope sample = 100.0 gm initially number of atoms of isotope No=…

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A: The integrated rate law expression for the first-order kinetics is: Half-life relates to the rate…

Q: If the half-life of 100.0 grams of a radioactive isotope is 8 years, how many grams will remain in…

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Q: A rock contains 0.257 mg of Pb-206 for every milligram of U-238.The half-life for the decay of U-238…

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Q: The rate constant for a certain radioactive nuclide is 9.4 x 103h-1. What is the half-life of this…

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Q: A patient is given 0.500 ug of technetium -99m, a radioactive isotope with a half-life of 6 hours.…

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

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Q: Plutonium – 236 is an alpha emitter with a half-life of 2.86 years. If a sample initially contains…

A: Given data Half life : t1/2=2.86 year Initial amount : No=2.56 mg time : t=7 year…

Q: A patient is given 0.050 mg of technetium-99m, a radioactive isotope with a half-life of about 6.0…

A: Given,0.050 mg of technetium-99m,Half-life is 6.0 hours.1.0×10-3 mg

Q: A 2.00 gram radioactive substance undergoes decay.  After 60 minutes, 1.50 grams have decayed.  What…

A: Radioactive decay generally follows first-order kinetics and for first-order kinetics:…

Q: Iodine-131, in a sodium iodide tablet, is used to measure the activity of the thyroid gland. If a…

A: Nuclear chemistry is a branch of chemistry which involved the study of reactions in the nucleus. The…

Q: A radioactive isotope has a half-life of 12.0 seconds. How much of a 100 gram sample is left after…

A: Given  Initial Mass of Sample ( A)0  = 100 gram  Half life time ( t1/2)   = 12 sec  Time ( t ) = 36…

Q: The radioactive nuclide 9Co has a half-life of 5.27 years. Calculate the mass of 2Co that remains…

A: We have to calculate the amount remaining after 1 year.

Q: How long would it take for the amount of u-235 to reach 1/8 of its initial amount? One of the…

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

A:

Q: A sample of lead isotope Pb decays by 209 82 emitting an alpha particle to form the nuclide W. If…

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Q: Bismuth-209 has a half-life of 2.01 x 1019 years.  How long will it take for 6.92 kg of bismuth-209…

A: We have to predict the time taken.

Q: The radioactive nuclide Co has a half-life of 8.5 hours. What mass of Co remains from a 0.0196 g…

A: Half life = 8.5hrs  Mass = 0.0196g  t = 18hrs

Q: 2. If a sample known to be about 17190 years old has 400 carbon-14 atoms, how many atoms were in the…

A: When organism died absorption of C-14 stops and starts diminishing. The radioactive decay follows…

Q: 1. If the amount of the parent isotope in the original sample of a rock had been 48 grams, about how…

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

A: Answer is as follows

Q: A sample of Tl-201 has an initial decay rate of 5.88 × 10^4/s. How long will it take for the decay…

A: First, the rate constant value is determined by using the given half life period.

Q: A 60 mg sample of a radioactive nuclide is administered to a patient to obtain an image of her…

A: Given: Half-life = 12 hours Radioactivity follows first-order kinetics. First calculate the rate…

Q: 187 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: isotope with a half-life of about 22 minutes. How much time will it take for a sample of Fr-223 to…

A: Radioactivity follows first order kinetics,  Half life time (t1/2) = 22 minutes  k = 0.693/t1/2 =…

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

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Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 5.2 g remain. What is the original…

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Q: 2P is a radioactive isotope with a half-life of 14.3 days. If you currently have 13.5 g of ²P, how…

A: The given data contains, t1/2 =14.3 daysPt=13.5 gP0=7 days

Q: Cobalt-60 is commonly used as a source of beta-particles. How long does it take for 87.5% of a…

A: Radioactive decay is associated with the emission of small energetic particles e.g. beta particles,…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.3 g remain. What is the original…

A: Answer

Q: Bromine has a half-life of 36 hours. A sample containing Br-82 was found to have an activity of…

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Q: 239Pu is a nuclear waste byproduct with a half-life of 24,000 y. What fraction of the 239Pu present…

A: Given data, t1/2 of P239u = 24,000 yTime (t) = 1000 years To calculate the fraction of the 239Pu…

Q: 3.) The Radioactive nuclide co has a half-Life of 8.5 hours, 55 27 what mass of Co Temains from a.…

A: Mass of sample remains after 18 hours is       0.0045 g.

Q: What is the half-live of a radioactive isotope if it takes 6.2 days for a 72g sample to decay to…

A: Given, 72 g to decay to 18 g. t = 6.2 days To calculate the half-life.

Q: Phosphorus-30, which has a half-life of 150 seconds, decays by positron emission. How long will it…

A: Nuclear reactions or nuclear decay follows first order kinetics. Given: Half life t1/2 = 150.…

Q: If you have 2.00 grams of a radioisotope, with a half-life of 5 days, how much of the isotope is…

A: Given;

Q: 4. The half-life of radioactive radium-224 is 3.50 days. What was the original mass if 0.200 g…

A:

Q: The radioactive nuclide ⁶⁰₂₇ Co has a half-life of 5.27 years. Calculate the mass of ⁶⁰₂₇Co that…

A: Given,

Q: The half-life of a given radioactive substance is 2.5 minutes. What fraction of the original…

A: Given, half-life , t1/2 = 2.5 min                     and, t = 10 min We need to calculate the…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.0 g remain. What is the original…

A:

Q: Carbon-14 has a half-life of 5730 yearsyears. In a plant fossil, you find that the 14C14C has…

A: Given data:

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 6.6 g remain. What is the original…

A: Radio active decay obeys first order kinetics. The expression for rate constant:   Half life of…

Q: With a half-life of 6.56 minutes, aluminum-29 decays to silicon-29 nuclide. After 18 minutes, what…

A:

Q: An 80.0 g sample of iodine-131 was placed in a sealed vessel forty days ago. Only 2.5 g of this…

A: Decay reactions are first order reactions. Since we know that the relationship between the amount of…

Q: A certain radioisotope has a half-life of 9.54 days. What percentage of an initial sample of this…

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Q: Iron-59 has a physical half-life of 45 days. If 96 g of a radioactive iron sample (59Fe) is received…

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Q: A patient is given 0.050 mg of Tc-99. How long until the isotope decays to 6.3 x 103 mg? (Half life…

A: Given  Mass of Tc-99  [ A0 ] = 0.050 mg  Remaining Tc -99 [ At ] = 6.3 × 10-3 mg  Half life ( t1/2 )…

Q: Nuclear reactions Nickel-56 decays with a half-life of 6.075 days. 1. Write the balanced nuclear…

A: Since you have asked multiple question, as per our company guidelines we are supposed to answer the…