" Ca is used in the study of bone formation. The half-life of Ca is 4.54 days. If you begin with 1.81 ug of this calcium isotope, what mass (in ug) remains after 22.7 days? 47

Q: Phosphorus-32 is a radioisotope used in the treatment of leukemia and pancreatic cancer. If the…

A: Given, Phosphorus-32 in a sample decreases from 1.2g to 0.30g in 28 days . We have to calculate half…

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

A: Given Half life (t1/2) = 78.2 hours Initial amount (N0) = 45.7mg  Time (t) = 193 hours Radioactive…

Q: Gadolium-153, which is used to detect osteoporosis, has a half life of 242 days. What percentage of…

A: Radioactive decay follows first order kinetics.Equation for half life, t½ = ln2 / kTherefore k = ln2…

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…

A:

Q: Technetium-99 has been used as a radiographic agent in bone scans (9943Tc is absorbed by bones). If…

A: Radiographic process follow first order:Total no. of hours in 2 - days = 2 x 24 hours…

Q: Carbon-14, a naturally occurring unstable isotope of carbon, has a half-life of 5,730 years. In a…

A: Given: Half-life = 5730 years. Initial concentration of carbon-14 isotope = 1.5 ppt  And time passed…

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

A:

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

A:

Q: gold -198 is used in the diagnosis of liver problems. the half-life of 198au is 2.69 days. if you…

A: Calculating the rate constant for first order reaction using half-life: t1/2=0.693k     .....(1)…

Q: Technetium-99 has been used as a radiographic agent in bone scans (9943Tc is absorbed by bones). If…

A: The half-life period is the time taken by one half of the radioactive substance to decay or…

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

A:

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

A: The initial amount of Chromium-51 (No) = 30.8 mg The half-life period of Chromium-51 (t1/2) = 27.7…

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

A:

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

A:

Q: Iodine-131 is used in the diagnosis and treatment of thyroid disease and has a half-life of 8.0…

A: The half-life of any radioactive element is the time in which it has been consumed half of its…

Q: Barium−131 is a radioisotope used to study bone formation. A patient ingested barium−131. How much…

A: The time in which half of the initial amount of the reactants convert into the product known as half…

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

A:

Q: Iron-59 is a radioisotope used to study iron metabolism in the spleen. It has a half-life of 44.5…

A:

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

A:

Q: Another form of radiometric dating is potassium-argon dating, which tracks the ratio of Ar-40 to…

A: Any reaction following "first-order reaction", that reactions rate always relies over single…

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

A: Given: The half life, (t1/2)=27.7 days. The initial concentration of Cr-51=28.7 mg 981

Q: If the first-order half-life of tritium (³H) is 12.26 years, what amount of time is necessary for it…

A: Given data : half-life of tritium (³H) is 12.26 years Let the initial amount be x. Also given that,…

Q: The isotope 90/38 Sr is one of the extremely hazardous species in the residues from nuclear power…

A:

Q: Thallium-201 is used medically to diagnose heart problems. The half-life of thallium-201 is 72.9…

A: Decay reactions are first order reactions. Since we know that, for different order of reactions, the…

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

A: Given Half life of Radon -222 ( t1/2 )  = 3.82 days  Initial amount of isotope ( A0 )= 33.5 mg  Time…

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

A:

Q: A 1.00 L sample of water near a nuclear plant registered a 2.55 pCi of iodine–131. What is the…

A: The given data contains, half life =8 days. =8 days×24 hourday×60 minhour×60 shour =681200 s mass of…

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

A: Gallium - 67 has a half-life of 78.2 hours. Initially 36.7 mg of Gallium - 67 were present.   Here,…

Q: The bromine isotope Br-75 is used for imaging in positron emission tomography. Br-75 has a half-life…

A: Half life of Br- 75 ( t1/2 )         = 57 hour  Suppose initial amount [ A ]0 = 100 %  Remaining…

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

A:

Q: mass of phosphorus-32,

A:

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

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

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

A:

Q: If the first-order half-life of tritium (°H) is 12.26 years, what amount of time is necessary for it…

A: The half-life is the time taken for the reaction to complete half of its original concentration

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: Nitrogen-13 is used in tracers injected into the bloodstream for positron emission tomography (PET).…

A:

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

A: Solution -

Q: The half-life of carbon-14, an isotope used in archaeological dating, is 5730 years. What percentage…

A: The age of the sample follows first order kinetics. This method is known as carbon dating. First…

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: The half-life of Strontium-85 is 65 days. How much of a 80. mg sample is left after 260 days? mg

A: Given: Initial mass of sample = 80 mg  Time passed = 260 days. And the half-life of isotope = 65…

Q: Thallium-201 is used medically to diagnose heart problems. The half-life of thallium- 201 is 72.9…

A: