A 76 mg sample of a radioactive nuclide is administered to a patient to obtain an image of her thyroid. Part A If the nuclide has a half-life of 12 hours, how much of the nuclide remains in the patient after 3.5 days? Express your answer using two significant figures.

Q: 3. A 50 gram sample of a radlolsotope undergoes 2 half-lives. How many grams would remain at the…

A: Half-life, in radioactivity, the interval of time required for one-half of the atomic nuclei of a…

Q: Consider a certain type of nucleus that has a half-life of 32 min. Calculate the time required for…

A: The radioactive decay law can be used to determine the time at which 66% nuclei are remining.

Q: The isotope 208 Tl undergoes Beta- decay with a half-life of 3.1 minutes. Calculate the amount…

A: Given, T208I undergoes beta decay. T1/2= 3.1 min initial concentration , CA0= 41.4 g time , t =…

Q: Explain what is meant by (a.) radioactivity (b.) half-Ilfe Why is it necessary to specify the…

A: a) Radioactivity is a process or phenomenon of disintegration of unstable nucleus into stable…

Q: Tin-129 is radioactive and has a half life of 2.23 minutes. How long would it take a sample to decay…

A:

Q: dead organism

A: Isotopes are the species which have same atomic number but different mass number. These are the…

Q: If you start with 71.0 grams of a radioactive substance with a half life of 3 days, how much will be…

A: Here given, Initial amount (N0) = 71 grams Half life (t1/2) = 3 days Time (t) = 15 days Amount left…

Q: 8. For the following nuclides:  i. Polonium-210 ii. Nitrogen-13 iii. Palladium-103 iv. Lead-214…

A: Four isotopes, whose most likely mode of decay is to be determined.

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

A:

Q: Identical amounts of two different nuclides, an alpha emitter and a gamma emitter, with roughly…

A: Identical amounts of two different nuclides, an alpha emitter and a gamma emitter, with roughly…

Q: 1 A radioisotope has a half life of 4 days. How much of a 20-gram sample of this radioisotope…

A:

Q: Nuclide X has a higher rate of decay than nuclide Y.  Based on this information, which of the…

A: B) Nuclide Y has a larger half-life than nuclide X. C). Nuclide X is less abundant than nuclide  Y.…

Q: A 56 mg sample of a radioactive nuclide is administered to a patient to obtain an image of her…

A:

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 4.4 g remain. What is the original…

A: The Answer to the following question is-

Q: Q5. The chart shows the mass of a decaying nuclide versus time. What is the half-life of the decay?…

A: The decay constant (k) can be determined by the following equation; k=-1tlnNN0 Here, N is the amount…

Q: A patient receives 9.2 ng of a radioisotope with a half-life of 12 hours. How much will remain in…

A:

Q: The half–life of a radioactive material is 7.04 days. Assuming you start with a 1.45 mg sample, how…

A: Given , Half life = 7.04 days Time , t = 16 days Initial Weight of sample = 1.45 mg

Q: 26. Four hundred grams of a radioactive substance decays to 50.0 grams. If it has a half-life of…

A:

Q: If 16.0 g of a nuclide with a half-life of 2.0 hr is allowed to decay for 10 hours, how much of the…

A: Chemical kinetics is the branch of chemistry that mainly deals with the rate of reaction and change…

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: The nuclide As-76 has a half-life of 26.0 hours. If you start with a 344 g sample of As-76, what…

A: Step : 1               Calculate the mass of As-76 remains after 538 minutes.

Q: Bismuth-210 is a beta emitter with a half-life of 5.0 days. If a sample contains 1.2 g of Bi-210…

A: Given data:

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

A:

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: Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14C has decayed to…

A: For each half life, the specimen decays half the amount of initial amount.

Q: A 56 mg sample of a radioactive nuclide is administered to a patient to obtain an image of her…

A: Consider the given information is as follows; Half-life of the nuclide t12 = 12 hours Initial amount…

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

A:

Q: 2. When the nuclide 2Np 239 93 und (B- decay) the nuclide produc 23911

A: The spontaneous disintigration of alpha, beta and gamma radiations by a substance irrespective of…

Q: 11. If it takes 20-hours for a radionuclide to-decay from 48,000 counts per minute to- 3,000-counts…

A:

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 4.2 g remain. What is the original…

A:

Q: The radioactive nuclide has a shelf-life of 17.5 hours. What mass remains from 0.0100g sample after…

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

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: 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: A radioactive isotope has a half-life of 84.5 minutes. How long will it take for the radiation from…

A: Half life t1/2 = 84.5 min = 5070 s

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: A solution of sodium iodine containing the radioactive isotope lodine-131 was given to a patient. If…

A: These radioactive decay reactions are the first order reactions . In these type of reactions , rate…

Q: If the half-life of a radioactive isotope is 3.5 minutes, how many grams of a 200-gram sample would…

A: The interval of time required for a radioactive isotope to decay to one-half of its atomic nuclei is…

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

A:

Q: Scientists have recently shown that a sample of cocaine can be traced to its country of origin by…

A: Type of radioactivity shown by carbon-14 is β- and the reaction is shown shown below.

Q: 9. For the following nuclides: i. Curium-243 ii. Cobalt-59 iii. Xenon-120 iv. Radium-226 a.…

A: The solution is as follows:

Q: If the nuclide has a half-life of 12 hours, how much of the nuclide remains in the patient after 6.0…

A: Given :  Half life of nuclide  = 12 hours  Total time = 6 days   Or total time = 6 × 24 hours = 144…

Q: radioactive sample contains 9.5 x 1017 atoms of a nuclide that decays at a rate of 5.4 x 1013…

A: We have to find half -life of nuclide

Q: A radioactive sample has a mass of 500 grams. How much remains after two half-lives?

A:

Q: A person is exposed for three days to identical amounts of two different nuclides that emit…

A: Given information:A person is exposed for three days to identical amounts of two different nuclides…

Q: A freshly prepared sample of radioactive nuclide undergoes 3312 disintegrations per second. After…

A: The radioactive reaction is first order reaction hence, it will follow first order of kinetics as-…

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 2.5 g remain. What is the original…

A: Given :-  Amount of sample left after 120 years = 2.5 g  Half-life kf Cs-131 nuclide = 30 years  To…

Q: A 58 mg sample of a radioactive nuclide is administered to a patient to obtain an image of her…

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.