Yttrium-87 has a rate constant of 2.6x10^-6 s^-1. What is the activity of a 780-mg sample in Bq?
Q: sample 3.00 hours before the injection (at 7:00 am) with an activity of 3.53 μCi at the preparation…
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Q: A sample has a ¹4C activity of 0.0052 Bq per gram of carbon. (a) Find the age of the sample,…
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Q: A pure carbon archaeological artefact has an age of 20000 years and an activity of 6 counts/min.…
A: The objective of the question is to find the activity of a pure carbon archaeological artefact at…
Q: Calculate the activity of a pure 9.5-μgμg sample of 32 over 15P (T1/2=1.23×106s).
A: Mass of sample (m) = 9.5 ×10-6 grams Molecular mass of P-32 = 32 grams Half life (T1/2) = 1.23×106…
Q: 3. A hot particle resided on the skin of a worker at a US NRC licensed facility for 24 hours and was…
A: The equivalent Dose is given by the formula D=A×k×twher A is the activityk is the conversion factort…
Q: Example (3) : 0.2 gram of pure potassium 40 ("K) emit about 10 beta rays per second .Estimate its…
A: Mass , m = 0.2 gm Atomic weight = 40 To find = Half life
Q: A 5,560 Ci 60 Co source used for cancer therapy is considered too weak to be useful when its…
A: Given, The activity of C60o used for cancer therapy = 5,560 Ci = R0 The reduced activity of C60o…
Q: 10.10. A sample of wood from an Egyptian mummy case has a specific activity of 9.41 d/min-g. How old…
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Q: A sample of silver contains 5.00 micrograms of Ag-105. Determine the activity of the sample in…
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Q: a sample with a half-life of 19 days has an initial activity of 7.0 x 10^5 counts/s. what isits…
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Q: 12. A point source of 5-MeV y-rays with intensity 3 x 103 y-rays/cm2- sec is shielded with 50 cm of…
A: Given: The energy of the Gamma-rays is E = 5 MeV The intensity of the point source is I0 = 3 x 103…
Q: 2. Cs-137 source used in mining industry has an activity of 740 MBq as of March 30, 2000. What will…
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Q: If the half-lifenof cesium-137 is 30 years, approximtely how much time is required to reduce a…
A: Half life of cesium, t1/2=30 years The mass of sample, Ao= 1 kg The reduced mass of sample, A=1 g…
Q: A sample of 134La(T/2 = 6.5 min) has an activity of 4 curies. What was its activity one hour ago?
A: Final Activity A = 4 curies Half life T1/2 = 6.5 min time t = 1 hour = 60 min
Q: Consider 6 µg of 210 Po. (a) What is the rate in disintegrations per sec? (b) What is the energy of…
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Q: Find the activity A of a sample containing 4E-6 g of Co (T1/2 = 5.27 years). (Use 59.93 u as the…
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Q: Radioactive tracers are used to study ion transport across cell membranes. The beta-minus emitting…
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Q: CSDA range Determine the expected range of 2 MeV beta radiation in polyethylene, Aluminium and air.…
A: Collision stopping power is the average rate of energy loss per unit path length caused by Coulomb…
Q: Question : A water solution of the Tc-99m radiotracer has an initial radioactivity of 2 mCi/ml. The…
A: Given, Half-life of Tc-99m is t12=6 hr. Initial activity, A∘=2 mCi/ml. Time of activity, T=12…
Q: What is the activity in Ci of a 2.6 mg sample of 3H? VE ΑΣΦ Ro = What is the activity in Bq of a 2.6…
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Q: Find the activity of a sample containing 1.63 10-6 g of (60/27)Co (T1/2 = 5.27 years).
A: As we know that the number 1 mole of mass of C2760o = 60gm…
Q: Find the activity of a sample containing 4.72 x 10-6 g of 60/27Co (T1/2 = 5.27 years)
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Q: Find the activity A of a sample containing 4E-6 g of 2760Co (T1/2 = 5.27 years). (Use 59.93 u as the…
A: Given: Weight, W =4.0×10-6 g Mass number, A = 59.93 u Avogadro number, NA = 6.022×1023 atoms/mol…
Q: Use the worked example above to help you solve this problem. The half-life of the radioactive…
A: Given data:T1/2=1.6×103 yrN0=3.41×1016 nucleiFirstly, converting half life into…
Q: A drug tagged with Tc (half-life= 6.05 h) is prepared for a patient. If the original activity of the…
A: Given:-Original activity (Ao)=1.1*104 Bq.Time (t) = 1.8 hoursHalf life = 6.05 hFind Activity…
Q: Find the activity of a sample containing 4.84 1014 iodine-131 nuclei (T1/2 = 8.0 days
A: Given, Number of iodine-131 nuclei (N) = 4.84 1014 T1/2 = 8.0 days
Q: Calculate the activity due to 14C in 1.00 kg of carbon found in a living organism. Express the…
A: The formula of activity is,
Q: A solution of In-111 DTPA from the Amersham Corp. in Great Britain arrives in your department with…
A: The half-life of In-111 according to the chart of nuclides is…
Q: A lab worker reports an activity of 80,000 counts/scounts/s for a sample of magnesium-21, whose…
A: The objective of the question is to understand the reason behind the drastic decrease in the…
Q: A sealed box containing alloys of metal A and Metal B consisting of the same parts accordingly.…
A: half life of A = 12 years half life of B = 18 years mass of A = 0.53 kg mass of B = 2.20 kg A =…
Q: What is the mass of 60 Co in a cancer therapy transillumination unit containing 5.00 kCi of 60 Co ?
A: The expression for the mass,
Q: Iodine-131 is a beta-emitter, which decay by the first-order rate law with a half-life of 8.0 days.…
A: Let t1/2 denote the half-life of the Iodine-131. It is given as 8 days. The decay constant λ can be…
Q: A 7. A saline solution of 24Na with an activity of 300 kBq is injected into the bloodstream of one…
A: The objective of the question is to calculate the patient's blood volume using the given activity of…
Q: Explain why 231-Th-90 is likely to be a beta minus emitter
A: Why 231-Th-90 is likely to be a beta minus emitter.
Q: Technetium-99 m has a half life of 4.8 hours. If a patient receives a dose with an activity of 60.2…
A: Given data : Half life (t1/2) = 4.8 hours Dose received (N0) = 60.2 mCi…
Q: A sample contains 1.0 GBq of ⁹0 Sr and 0.62 GBq of ⁹0Y. (a) What will be the total activity of the…
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Q: Experimentally, it is found that natural potassium emits 31 beta particles per second per gram and…
A: The objective of the question is to determine the half-life period of K-40 using the given data…
Q: a) The ionic radius of lead is 0.180 nm. What fraction of this volume does the nucleus take up for…
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Q: The radionuclide 32P (T1/2 = 14.28 d) is often used as a tracer to follow the course of biochemical…
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Q: The C14 with an activity of 10 Ci is in a 1.0 mm thick lead box. Calculate the number of beta…
A: C14 has an activity of 10 Curie1 curie is defined as 3.7×1010 decays/sSo, 10×3.7×1010=37×101037×1010…
Q: What is the decay probability per second per nucleus of a substance with a half-life of 22.5 hours?
A: When a nucleus is unstable it will radiate energy or particles to become stable. This process is…
Q: 4. 500 mCi sample of radioisotope was purchased by a medical supply house. If the sample has the…
A: Given: The activity of the initial sample of the radioisotope is A0 = 500 mCi The activity reduced…
Q: Find the activity of a sample containing 4.84 1014 iodine-131 nuclei (T1/2 = 8.0 days).
A: For radioactive elements activity is the measurement of the number of unstable nuclei that decay per…
Q: Human bones are discovered during construction of a subway system. The concentration of carbon-14 in…
A: Using formula of Carbon dating i.e formula relating concentration of Carbon in the living fossil…
Q: A drug containing 9943Tc with an activity of 2.00 μCi is to be injected into a patient at 11:00 am.…
A: Given, At 11:00am, activity of is, A = 2μCi But initially, at 7:00am, activity of is, Ao = 3.16μCi…
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