The half-life of Tl-201 is 3.0 days. How many days will it take until the activity of the Tl-201 in Simone’s body is one-fourth of the initial activity?   Express your answer using two significant figures.

Q: About 0.0117% of the 600 mg of potassium in a typi- cal banana is radioactive potassium-40. If 1.00…

A: Given: 1) Mass of potassium in a typical banana is radioactive 0.0117% of the 600 mg of…

Q: The half-life of bismuth-210, 210Bi, is 5 days.(a) If a sample has a mass of 200 mg, find the amount…

A: Solution-  (a)-The half life periods of Bismuth-210 is 5days.the rate of decay of any substance…

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: A sample of cobalt-60 was labelled as having an activity of 3.25mCi, but upon inspection, it…

A: Co-60 is used medically for radiation therapy as implants and as an external source of radiation…

Q: If the amount of radioactive phosphorus-32 in a sample decreases from 2.4 mg to 0.30 mg in 42.9…

A:

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

A:

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: The carbon-14 activity of an artifact from a burial site was 9.2 min'gl. The half-life of carbon-14…

A: The C-14 decay reactions are first order reactions. Since we know that the relationship between the…

Q: 32p has a half-life of 14.3 days. The original sample of 32P has a mass of 1.88 g. Approximately…

A: Answer: 0.0294 g

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

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Q: A hospital patient receives a dose of Technicium-99m with a mass of 0.050mg. Given that the…

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Q: What is the activity

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Q: A sample of tin contains 10.00 micrograms of tin-123.  Determine the activity of the sample in…

A:

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: a wooden object from the site of an ancient temple has a carbon-14 activity of 10 counts/min…

A:

Q: Calculate the half-life of a radioisotope if it takes 72 years for a sample to decay to 12.5% of its…

A: 100 % to 50 % one t1/2. 50 % to 25 %  second t1/2. 25% to 12.5 third t1/2. three t1/2 = 72 years.…

Q: A mixed thorium decay product sample is separated into elements, yielding a 1.19mg sample of…

A: Actinium-225 is a radioactive substance with a half-life, t1/2 of 9.20 days. t1/2 = 9.20 days * 24…

Q: What is the nuclear binding energy for a mole of beryllium (Be-9), whose mass is 9.01218? (mass of a…

A: Nuclear binding energy is the energy required to separate an atomic nucleus completely into its…

Q: Choose the appropriate drop-down to complete the paragraph. Gallium-67 has a half life of 78.1 hours…

A: lf life of Galium-67 = 78.1 hours lf life of Radium- 226= 1600 years

Q: 3. The half-life of radon is 3.82 days. What fraction of a freshly separated sample of this nuclide…

A: The half-life of a radioactive isotope (t1/2 ): All radioactive decay first-order reaction kinetics.…

Q: A tiny piece of paper taken from the Dead Sea Scrolls has an activity of 10.8 disintegrations per…

A: Radioactive disintegration follows first order kinectics. Hence, the rate of decay can be followed…

Q: Radium-226 (atomic mass = 226.025402 amu) decays to radon-224 (a radioactive gas) with a half-life…

A: First, decay constant value is determined using given half life value.

Q: old-198 is a β emitter used to treat leukemia. It has a half-life of 2.7 days. The dosage is 1.0…

A: Interpretation: The time taken for 70.-mCi dose of Gold 198 to decay to an activity of 2.2 mCi is to…

Q: The half-life of Po-218 is 3.05 minutes. How many minutes does it take for a sample of Po-218 to…

A: Given: Half-life of Po-218 = 3.05 minutes. And the final amount of Po-218 isotope remaining = 2.35 %…

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: 60Co has a half-life of 5.27 yr. What percentage of its original activity will a sample of 60Co have…

A: Dear student,I am providing solution for Q.1 that you have asked as we are entitled to do one…

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

A:

Q: Calculate the half-life of a radioisotope if it takes 144 years for a sample to decay to 12.5% of…

A: N = 0.125 No N/No = 0.125

Q: Randon gas has atomic number 86 and mass number 222. Randon is radioactive and decays via alpha-…

A: Given: Randon gas has atomic number 86 and mass number 222. Randon is radioactive and decays via…

Q: The carbon-14 decay rate of a sample obtained from a young tree is 0.252 disintegration per second…

A: Decay process is a first order reaction. Therefore we have to put the integrated rate law for first…

Q: The half-life of oxygen-15 is 124 ss. If a sample of oxygen-15 has an activity of 4800 BqBq, how…

A: Half-life of a reaction is the time at which the initial concentration of the reactant becomes half.…

Q: A sample of an alpha emitter having an activity of 0.20 Ci is stored in a 29.8 mL sealed container…

A:

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: A piece of wood from an ancient artifact has a carbon-14 activity of 11.7 disintegrations per min.…

A: Decay reactions are first order reactions. Since we know that the relationship between the activity…

Q: What is the activity (in Bq) of a sample of Cs-137 if 81.6 years ago it was recorded to have an…

A: Time = t = 81.6 years Initial activity = A0 = 7536.7 Bq  Final activity = A = ? Bq  Every…

Q: 1) Phosphorus-32 has a half-life of 14.0  days . Starting with 4.00  g  of  32P , how many grams…

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

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: What is the radioactivity of the sample of sodium-24 after 30 hh? Express the activity to two…

A: Given that  We have sample of sodium-24 We have to calculate radioactivity of thie sample after 30…

Q: 14.25 A wooden artifact is burned and found to contain 21 g of carbon. The ¹4C activity of the…

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Q: Phosphorus-32, 32P, is a radioactive isotope used in the treatment of leukemia. The half-life of $2P…

A: Radioactive decay of element is first order kinetics , in which half life of molecule is independent…

Q: What is the activity (in Bq) of a sample of Cs-137 if 31.6 years ago it was recorded to have an…

A: Given: The initial activity of Cs-137 = 9932.8 Bq And the time passed = 31.6 years. The half-life of…

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

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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: 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: a. Write the β- decay reaction.  b. What is the initial number of Cs-137 atoms in the sample?   c.…

A: Nuclear kinetics follows first order kinetics and all formulas of first order reaction is applicable…

Q: A sample of cobalt–60 was labelled as having an activity of 3.25 mCi, but upon inspection, it…

A: Given  initial activity of Co-60 = 3.25 mCi final activity of Co-60 = 1.50 x 107 Bq  half life time…

Q: rock containing 238U and 206Pb was examined to determine its approximate age. The molar ratio of…

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

A: The solution is as

Q: 38.)In a cyclotron facility, 106 atoms of F-18 were created. The half-life of F-18 is 110 minutes.…

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Q: Radiation workers enter an area for 20 minutes in which they are subjected to 50 keV neutron…

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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.