What is the half-life of bismuth-214 if 62.5 minutes are required for the activity of a sample of bismuth-214 to fall to 11.1 percent of its original value? mins

Q: The following exercise poses a question that can be answered by solving an equation. Give the…

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Q: The half life for the decay of carbon-14 is 5.73 × 10’ years. Suppose the activity due to the…

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Q: Iodine-131 has a half life of 8 days. Your friend with a thyroid condition is given 40 mg of I-131…

A: Radioactive decay follows the first-order kinetics. The half-life of the first-order reaction does…

Q: Iodine-131 has a half-life of 8.0 days. How long will it take 10 µg of 131I to decrease to 1/100 of…

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Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. What is the half-life of…

A: Given,final activity of iron-59 = 17.2 %The time taken to decrease activity of iron-59 from original…

Q: What is the half-life of a radioactive substance if after 5 years 95 percent of an initial amount…

A: Half life of a given radioactive substance is that time duration in which it's amount reduced half…

Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

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

Q: Radium-226 has a half-life of 1600 years. If a sample of radium-226 has a mass of 512 milligrams,…

A: we have to calculate mass of radium-226 remaining after 8000 years  Sign of the values R and S

Q: One of the radioactive isotopes used in medical treatment or analysis is iron-59. The half-life of…

A: Radioactive decay obeys first order decay kinetics   At=Aoe0.693t12×twhereAt= final activityAo=…

Q: If the mass of a sample of radioactive cesium-137 decays from 71.9 milligrams to 20.8 milligrams in…

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

Q: The half-life of 238U is 4.5 * 109 yr. A sample of rock of mass 1.6 gproduces 29 dis>s. Assuming…

A: The given data contains, mass = 1.6 g. half life=4.5×109 year.

Q: The activity of an Argon-39 sample is 2.08E+9Bq. The half-life of 39Ar is 269 years. What is the…

A: We have , Activity of the sample     R=λN=MλmNA​​=T1/2​ln2​×MmNA​​…

Q: The Br-82 nucleus has a half-life of 1.0 x 103 min. If you wanted 1.0g of Br-82 and the delivery…

A: Given the half-life of Br-82, t1/2 = 1.0*103 min  Disintegration constant, λ = 0.693t1/2 =…

Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

A: Given  Half life of cesium - 129 =  32 hours  Remaining activity [ A ] = 14.5 %  Time ( t ) = ?

Q: A rock is found to have 12.75 mg of 238U and 1.19 mg of 206 Pb. Determine the age of the rock. The…

A: Age of rockT = (2.303 / ) *log (No/N) Where   = 0.693/t1/2Where,No is the initial quantity of 238U…

Q: 3)The half-life of 14C is 5730 years. A sample contains 90.5% of the 14C it would contain if it were…

A: Given : half life = 5730 years  Tip : apply the radioactivity equation

Q: Iodine 1 31 has a half life of about 8 days.  In 40 days what percent of the original sample would…

A: Formula used :-  t1/2 = .693/k  Where k is rate constant. k = 2.303/t log [A0]/[A]

Q: What is the half-life of thallium-210 if 2.40 minutes are required for the activity of a sample of…

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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: A rock constains Pb-206 to U-238 mass ratio of 0.245: 1.00. Assuming the rock did not contain any…

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

A: The half life of the iodine -131 = 8.04 daysThe time required for sample to reduce to 6.14 % of…

Q: Iodine-131 has a half-life of 8 days. What fraction of the original sample would remain at the end…

A: Half life is the period at which concentration of reactant reduces half of its original value.

Q: None

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Q: Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact…

A: Half life for decay of C-14 (t1/2) = 5.73 × 103 years  Activity due to decay in archaeological…

Q: The half life of a radioactive iodine is 8 days. How long will it take for 0.25 g of radioactive…

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Q: The half life for the decay of carbon-14 is 5.73 × 10³ years. Suppose the activity due to the…

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Q: The half-life of 14C is 5730 years. A sample contains 92.4% of the 14C it would contain if it were…

A: The age of the old fossils can be find out by using carbon dating method.  So the amount of 14C…

Q: The half life of 21 At is 7.214 hours. What fraction of a sample of21At will remain after 3.141…

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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: Iron-59 is a radioisotope that is used to evaluate bone marrow function. What is the half-life of…

A: Given, t = 190 days t1/2 = ?

Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

A: Detail mathematical calculation is shown below

Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

A: ⊙ Radioactivity, phenomena follow first order            kinetics                K =2.303t…

Q: What is the half-life of uranium-234 if 4.49×10° years are required for the activity of a sample of…

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Q: Th-234 has a half-life of 24.1 days. If a 355 mg sample is initially present, how many half-lives…

A: Given  Half life ( t1/2 )  = 24.1 days  Initial amount  = 355 mg  Time ( t ) = 96.4 days  Number of…

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

A: We know, radioactivity is an example of first-order reaction.

Q: Iron-59 is a radioisotope that is used to evaluate bone marrow function. The half-life of iron-59 is…

A:

Q: One of the radioactive isotopes used in medical treatment or analysis is iodine-131. The half-life…

A: The relationship between the decay constant and the half-life period is given below.

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

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Q: The half-life of nitrogen-16 is 7.0 seconds. How long does it take for 100 mg of nitrogen-16 to be…

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

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

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.