Americum-241 is widely used in smoke detectors. Calculate the amount of Americum-241 consumed in a smoke detector (initially containing 4.60 mg of Am), in micrograms, that has been used for one year if the half life is 433 years.

Q: For each of the following, indicate if the number of half-lives elapsed is: a sample of Ce−141 with…

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

Q: A sample of cobalt-60 (t1/2 = 5.27 yr), a powerful g emitter used to treat cancer, was purchased by…

A: All radioactive decay processes follow first order reactions. Calculating rate constant for first…

Q: Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a…

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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: Technetium has not been found in nature. It can be obtained readily as a product of uranium fission…

A: 1.0 ug of 99m Tc undergoes decay, having half-life of 6.0 hours.Here we have to calculate the…

Q: Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a…

A: The radioactive substances mainly possess decay process through first-order kinetics and half-life…

Q: technetium-99 has a half-life of 6.0 hours. How many gramsin a 24.0 gram sample will remain…

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Q: Technetium-99m (Tc-99m) is used extensively in diagnostic applications, including PET scans. The…

A: Rate of a reaction determines the speed with which a reaction proceeds. First order reaction is 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: Technetium-99m is used in diagnostic imaging studies involvingthe brain. What fraction of the…

A: Law of Radioactive decay states that the rate of disintegration of a radioactive substance at any…

Q: 238U 92 234TH +He 90

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

A: Rate of a reaction determines the speed with which a reaction proceeds. First order reaction is a…

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

A: Time required for the activity of a sample of iodine-131 to fall to 5.57 percent of its original…

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: Technetium-99 (half-life = 6.01 h) is used in medical imaging. How many half-lives would go by in…

A: a) Given t1/2 = 6.01 h 100% →6.01 h 50 % →6.01 h 25 % →6.01 h12.5 % →6.01 h 6.25 % →6.01 h 3.125 %…

Q: If a mineral contains 1.56 % of its parent isotope, how many half-lives have gone?

A: Half Life Real analysis by the simple Concentration Analysis is mentioned in step-2  1st order…

Q: A 450.0-mg sample of technetium-99m was used for a diagnostic test.  If technetium-99m has an…

A: Given - Initial amount=450.0mg Half life=4.8h Time=48h

Q: Cesium-134 is a β emitter with a half-life of 2.0 years. How much of a 2.50-g sample of cesium-134…

A: The radioactivity decay follows the first order kinetics. The formula for the first order kinetics…

Q: 1.Element F has a quarter life of 10 hrs. If there are 925 milligrams remaining of element F after…

A: SOLUTION: A = AoE-KT  (First order reaction) Quarter life = 10Hours At quarter life A=3Ao/4 3Ao/4 =…

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

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Q: A to 240mg sample of technetium 99M is used for a diagnostic test. if Technetium -99m has a…

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

A: Given   The half-life is 78.2 hours. The fall in activity of gallium-67 is 29.1 percent of its…

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

A: Answer: Suppose initial quantity of Iodine-131 is N0  Then remaining after time t will be…

Q: 1. Sodium-24 is a diagnostic radioisotope used to measure blood circulation time. How much of 20.0…

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Q: What is the binding energy in kJ/mol Ga for gallium-71? kJ/mol 31 H+ 40,n Ga The required masses…

A: Given-> Masses -> 1H1 = 1.00783 g/mole 0n1= 1.00867 g/mole 31Ga71= 70.92490 g/mole

Q: Iodine-131 is a convenient radioisotope to monitor thyroid activity in humans. It is a beta emitter…

A: To find: why is NaI a good choice for the source of the iodine.

Q: Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a…

A:

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: The half life of 52Fe is 8.28 hours. Suppose we measure the activity of a sample containing 52Fe and…

A: Calculation of disintegration constant (λ):T1/2 of 52Fe is = 8.28 hours.

Q: Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a…

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Q: A laboratory investigation shows that a sample of uranium ore contains 5.37 mg of 238/92 U and 2.52…

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Q: A 85.0-mg supply of iodine-131, used in hospitals in the treatment of hyperthyroidism, was stored…

A:

Q: Cobalt-60 is used extensively in medicine as a source of g-rays. Its half-life is 3.97 years. How…

A: Given: Half-life of Co-60 = 3.97 years = 3.97 × 365 = 1449.05 days…

Q: Radiation seed therapy is a common method for treating some prostate cancers and brain tumors.…

A: Radioactive degradation follow first order kinetics.

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

A: The basic formula for half life equations is A= amount remainingP= original amountt= elapsed…

Q: The half-life of radiogold is approximately 3 days. If 1.5 g of this has been administered to a…

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Q: Radon-222 has a half-life of 4 days. How long does it take 234 mg of radoon-222 to reach 14.6 g? 4…

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Q: A sample of sodium-24 with an activity of 12 mCi is used to study the rate of blood flow in the…

A: Given:Half-life = 15hInitial amount [A]o = 12 mCi.

Q: Thallium-201 is used medically to diagnose heart problems. What is the half-life of thallium-201 if…

A: Time = 128 hours  t1/2 = ?

Q: Neptunium-237 has a half-life of 2.1 million years. The amount N of 400 kilograms of neptunium-237…

A: Exponential decay According to decay law, it calculates the amount of undecayed nuclei in a…

Q: A bottle of vintage red wine has lost its label. The concentration of tritium in the wine is 0.34…

A: Radioactive decay reactions are the first order reactions in which the rate of decay of a…

Q: (c ) Iodine-131 has a half-life of 8 days. How many grams of I-131 in a 4.0 g sample remain after…

A: (c) The amount of the isotope that remains after given decay time is calculates by using below…

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

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Q: An 80-mg sample of technetium-99m is used for a diagnostic test. If Tc-99m has a half-life of 6.0…

A: Given  Initial Amount of Sample (A)0 = 80 mg  Half life ( t1/2 )  = 6 hour Time ( t )   = 24 hour…

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

A: Radioactive decay follows the first-order kinetics. The decay constant (λ) and half-life of a…

Q: 14.20 60Co is used extensively in medicine as a source of y-rays. Its half-life is 5.27 years. (a)…

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Q: Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a…

A:

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

A: The decay reactions are first order reactions. Since we know that the relationship between the…

Q: The cesium-137 has a half life of 30 years after 90 years about 10g.remains. the original mass of…

A:

Q: Americium-241 is widely used in smoke detectors. Calculate the amount of americium-241 consumed in a…

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.