A hospital patient receives a dose of Technicium-99m with a mass of 0.050mg. Given that the radioactive tracer has a half-life of around 6.00 hr, after how much time will the mass of Tc-99 be equal to 1.00 x 10-6 g? Group of answer choices

Q: The half-life of bismuth-210, 210Bi, is 5 days. (a) If a sample has a mass of 216 mg, find the…

A: The decay of radioactive elements follows first order kinetics. So we would use first order reaction…

Q: Iodine that answers the body is stored in the thyroid gland from which is released to control growth…

A: Radioactive decay follows of first order Kinetics.

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

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Q: Carbon-14 is used in radiocarbon dating. The half-life of carbon-14 is 5.73*10^3 years. How many…

A:

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…

A:

Q: While exploring a coal mine, scientists found plant fossils which had been preserved by an…

A:

Q: Determine the half-life of a radionuclide if after 18 days the fraction of undecayed nuclides…

A: Half-life (t1/2) represents the amount of time at which the concentration of the radioactive nuclide…

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

A:

Q: In a treatment that decreases pain and reduces inflammation of the lining of the knee joint, a…

A: Initial count (No) = 1100 per second Final count (Nt) = 1.14 per second Time (t) = 24 hours

Q: 7) Aluminum-29 decays to a silicon-29 nuclide with a half-life of 6.56 minutes. What percent of an…

A: Given -  Half life=6.56minutes Time=18minutes

Q: 15. A mammoth skeleton has a carbon-14 decay rate of 0.48 disintegrations per minute per gram (0.48…

A:

Q: Suppose that 10 units of beryllium are present in a living organism and that the half-life of…

A: Here i have calculated the age of material

Q: pile of radioactive material with a half-life of 10 years needs to sit until 0.0039 of the original…

A:

Q: 3. An archeologist unearths a bone sample and wants to know the age of the initial amount of…

A: Given:  Present amount of bone = 49 %  Half life = 5730 years

Q: An ancient wood sample is known to be 2500 years old. a. Knowing that the half-life of carbon is…

A:

Q: A small figure carved from wood, believed to predate the period of Roman occupation of the Middle…

A:

Q: life of 1.27 × 109 yr. The age of a mineral sample that has a mass ratio of 40Ar to 40K of 0.330 is…

A: The answer is given as follows

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 piece of wood, reportedly from King Tut's tomb, was burned, and 7.32 g CO2 was collected. The…

A: In order to find the age of the sample we first write down the given data: Mass of CO2=7.32 g. Total…

Q: a 45.91 mg sample of a pure radioisotope has a half-life of 52 days, what will be the mass of the…

A: Given 45.91 mg sample of a pure radioisotope has a half-life of 52 day mass of the original…

Q: Carbon-14 has a half-life of 5730 years, how old is a dress that was found to have a specific…

A:

Q: Suppose the amount of a certain radioactive substance in a sample decays from 9.40mg to 5.40mg over…

A: Radioactive decay is the first order decay. the formula for calculation of radioactive decay as…

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: Carbon-11 radioactively decays by positron emission with a half-life of 20.4 minutes. If a dosage of…

A: Given that : The half-life of carbon-11 = 20.4 min We have to calculate the % of carbon-11 will…

Q: A skull believed to belong to an ancient human being has a carbon-14 decay rate of 6.50 dis/min.g of…

A: Radioactive disintegration follows first order reaction and decay rate equation can expressed as,…

Q: An archeological sample was predicted to be 9,415 years old. If the C-14 measured at present in the…

A:

Q: 3. A certain radioactive material is known to decay at a rate proportional to the amount present. If…

A: Solution -

Q: 1. This question is about nuclear chemisty. a) What is the age of a mummy, given a 14C activity of…

A: (a) To find the age of mummy, Given that: Current 14C activity = 8.5 min-1 g-1 Activity just before…

Q: A piece of charcoal from a tree killed by the volcanic eruption that formed the crater in Crater…

A: The radioactive decay follows first-order kinetics. We know that the half-life of carbon-14 is 5730…

Q: Suppose that the initial mass of a radioactive substance is m and the half-life of the substance is…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: The iodine-131 nuclide has a half-life of 8.0 days. If you originally have a sample containing 728-g…

A: Known: Half-life  = 8.0 days Original mass = 728 g Time elapsed = 6.86 weeks = (6.86 ×7)…

Q: Plutonium-236 is an alpha emitter with a half-life of 2.86 years. How long will it take for the 1.15…

A: Radioactive decays follows first order kinetics. For the for order kinetics: k = 0.693 / t1/2 t =…

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

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

Q: 24. A radioactive substance weighing 18.00 grams undergoes radioactive decay in 12.5 days and has…

A:

Q: Certain radioactive isotope has a half-life of 3.9 minutes. If we initially have 7168 grams of this…

A: According to the question, we have: Half life of radioactive isotope = 3.9 minutes.  Initial mass =…

Q: 0.132-g sample of Fe-29 (half-life is 44.5 days) is allowed to decay for 265 days. What quantity of…

A:

Q: A 50.0g sample of nitrogen-16 takes 14.4 second to decay to a mass of 12.5G. Calculate the half life…

A: Given: The time taken by N-16 to undergo decay, t = 14.4 sec The initial amount of N-16, No = 50.0 g…

Q: Gold-198, a β-emitter used to test leukemia, has a half-life of 2.695 days. The standard dosage is…

A:

Q: While exploring a coal mine, scientists found plant fossils which had been preserved by an…

A: Given: Amount of carbon-14 in fossil = 20 counts/min = Nf Amount of carbon-14 in living tissue = 160…

Q: One of the nuclides in spent nuclear fuel is UU-235, an alpha emitter with a half-life of 703…

A: The half-life of U-235 is = 703 million years The time to reach the amount of U-235 to 1/4 of its…

Q: radioisotope tracer has a half-life of 1.5 minutes. If a level of <1% is considered safe, when would…

A: Half life of a radioactive isotope is the amount of time it takes for one half of the radioactive…

Q: A skull believed to belong to an ancient human being has a carbon-14 decay rate of 6.50 dis/min.g of…

A: The half life for a radioactive element can be defined as the time taken by the half of the material…

Q: Calculate how long will it take for a sample of a radionuclide with a half-life of 39.9 days decay…

A:

Q: If a substance has a half life of 1500 years, and an initial mass of 1000 grams, how much of the…

A:

Q: Cobalt-60 is a beta emitter with a half life of 5.3 years. Approximately what fraction of cobalt-60…

A:

Q: Technetium‑99m, an important radionuclide in medicine, has a half‑life of 6.0 hours. What percentage…

A: Given  Half life ( t1/2 ) = 6 hours

Q: The cesium-137 nuclide has a half-life of 30 years. After 90 years, about 10 g remains. The original…

A: Radioactive decay follow first order kinetics. Half life of Ce is 30 yrs. Mass of original sample =…

Q: A specimen of charcoal found contains 57% as much 14C as a sample of present day charcoal. What is…

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

Q: If the half-life of a 2.0 gram sample of a radionuclide is 15 hours, then the half-life of a 1.0…

A: Given: Initial mass of sample = 2.0 g. Half-life of sample = 15 hours. And final mass of sample =…

Q: Hydrogen-3 is radioactive and has a half life of 12.3 years. How long would it take a sample to…

A: Given that -  Hydrogen-3 is tritium which is a radioactive isotope with half life = 12.3 years…

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.