What is the decay probability per second per nucleus of a substance with a half-life of 22.5 hours?
Q: Atts, you have a pure sample of an unknown substance. At t= 293 s, 36.8% of the substance remains.…
A: Radioactive substance remaining at t=293s, N=36.8100×N0=0.368N0
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A: No = 192 cpmN = 3 cpm
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A: The objective of the question is to find out the fraction of the dosage of Iodine-131 that will…
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Q: Samarium-153, a radioactive isotope with a half-life of approximately 48 hours, is used to treat…
A: Given, Half life, T1/2=48hours=2 days
Q: For a fission reaction, 1.92 x 1016 J of energy is released. What is the mass defect in kg?
A:
Q: What is the binding energy per nucleon of 24 Pb? Give your answer in MeV
A: Mass defect of Pb is
Q: A radioactive sample of 60Co (t₁/2 = 5.271 y) has a ß- activity of 4.4 X 107 Bq. How many grams of…
A: When the number of protons and neutrons inside a nucleus is not balanced some nuclei will become…
Q: 40.12 A sample of material contains 2.00 x 1015 atoms. The sample initially consists entirely of a…
A: Let N denote the number of atoms of the radioactive substance A. Let t1/2 denote the half-life time…
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A: Given:-Original activity (Ao)=1.1*104 Bq.Time (t) = 1.8 hoursHalf life = 6.05 hFind Activity…
Q: There is more than one isotope of natural uranium. If a researcher isolates 1.00 mg of the…
A: mass = 1 mg = 0.001 g Activity = 80Bqhalf life ??
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A: Given: Atomic mass of 73Li=7.016004 u atomic mass of 42He=4.002603 u atomic mass of neutron…
Q: A synthetic radioisotope is freshly prepared in a lab that has an activity of 10.0 mCi. If the…
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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 =…
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A: Hlf-life time of radioactive element is Mass of element is Note:Molar mass of is Avogadro's number…
Q: A sample of carbon of mass 6.74 g taken from an animal jawbone has an activity of 4.00 decays/min.…
A: Given that the 6.74 g of carbon taken from the jawbone. The no. of moles in 6.74 g of carbon be…
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 nuclei has a half-life of 2.80 days. If 122 mCi were prepared but had a delay of 8.0 days. How…
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Q: Strontium-90 from the testing of nuclear bombs can still be found in the atmosphere. Each decay of…
A: The amount of nuclei initially absorbed is
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Q: an element with initial mass 1 kg started radioactivity in 2021 , in which year the element will…
A: The mass is proportional to the radiation concentration. Which means that the radiation equation can…
Q: The half-life of 27Mg is 9.50 min. initially there were 3.70× 1012 27Mg nuclei present. How many…
A: Given: The half-life of 27Mg t1/2 = 9.50 min At t=0, the number of nuclei of 27Mg, N0 = 3.70× 1012…
Q: A building has become accidentally contaminated with radioactivity. The longest-lived material in…
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Q: a) What is the decay constant of fluorine-17 if its half-life is known to be 66.0 s? λ = b) How…
A: Given value--- Half life time of F -17 (t 1/2) = 66 sec. We have to find--- What is the decay…
Q: The reaction shown below has a Q value of 13.574 MeV. H+ N - C+ He Determine the atomic mass (in u)…
A: The Q value of the given nuclear reaction is given by, Q=sum of mass of reactants -sum of mass of…
Q: building has become accidentally contaminated with radioactivity. The longest-lived material in the…
A: Answer is 1685.2 years
Q: the decay of a radioactive material has a count rate is 2000 decays/min. 4 hours later, the decay…
A: Given:- the decay of a radioactive material has a count rate is 2000 decays/min. 4 hours later, the…
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A: Given data: The half-life of palladium is t1/2=17 days. The mass contained by the grain is m=0.27…
Q: You find a 37.2 g fossilized bone that has an activity of 0.024 counts per second. How old is the…
A: A living matter has 1.3×10-10 % of C-14, and the half-life of C-14 is 5730 years. Thus, determine…
Q: A 75 kg patient swallows a 33 μCi beta emitter whose half-life is 5.0 days and whose RBE is 1.6. The…
A: To find out how many radioactive nuclei the patient swallowed, we can use the concept of radioactive…
Q: iodine 131 has a half life of 8.04 days if you start with a radioactivr I 131 sample having an…
A: Half life of I-131 isotope = 8.04 days Initial activity (Ao) = 40 micro Ci Final activity (A) = 4…
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- What is the decay probability per second per nucleus of a substance with a half-life of 5.0 hours?A radiopharmaceutical is labeled with an activity of 480 mCi on April 1 at 6:00am. What is the activity of the formulation in mCi at 6:00am on April 10? The half life of the radioisotope is 8.10 days. Report to the nearest tenth, number only. λ=2.303/t (logN0/N)In 1992, Swiss police arrested two men who were attempting to smuggle osmium out of Eastern Europe for a clandestine sale. However, by error, the smugglers had picked up 137Cs. Reportedly, each smuggler was carrying a 1.0 g sample of 137Cs in a pocket! In (a) bequerels and (b) curies, what was the activity of each sample? The isotope 137Cs has a half-life of 30.2 y. (The activities of radioisotopes commonly used in hospitals range up to a few millicuries.)