Measurements of a certain isotope tell you that the decay rate decreases from 8343 decays/minute to 3070 decays/minute over a period of 3.50 days.
Q: 12455 Cs has a half-life of 30.8 seconds.a) If we have 9.7 µg of Cs initially, how many Cs nuclei…
A: The objective of the question is to calculate the initial number of Cesium nuclei, the number of…
Q: Consider the α decay 92U143→ 90Th141+2He2. Part (a) What energy, in megaelectron volts, is…
A: The -decay is Mass of daughter nuclide is Note:Mass of uranium is Mass of helium is Find:(a) Energy…
Q: The decay constant of 235U is 9.8×10^−10 y^−1 . How many 235U atoms will remain in a 1.0 µg sample…
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Q: A 44.5 g sample of carbon has an activity of 8.55 decays per second. How old is it? Please give your…
A: Given data The mass of the sample of carbon is given as m = 44.5 kg. The number of decays is given…
Q: he mass of 56 Fe is 55.9349 u and the mass of 56Co is 55.9399 u. WHich isotope decays into theother…
A: Isotopes are the elements having the same atomic number but the different mass number. For example,…
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Q: What is the energy released in the alpha decay 234 of ŠU? The mass of 00 Th is 234.044 u, of 92 238…
A: Mass of uranium atom is MU = 238.051 u Mass of thorium atom is MTh = 234.044 u Mass of helium atom…
Q: By READING the R vs t graph shown below, determine R, & the half-life. R (x10¹2 decays/h) 80 60. Ro…
A: Given From the given graph of Decay rate vs time R0 is the rate of decay at t =0 Therefore , R 0…
Q: 26 amu. what is its binding energy per nucleon? (6) For the nuclear reaction 14 4. 17 He H.…
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Q: f you start at t = 0 a decay rate of r = 10,000 Cs -137 decays per second, how many decays per…
A: The half life of Cs-137 is 30.17 years t1/2 = 30.17 years = 30.17*365*24*60*60t1/2 =
Q: 7) An archaeologist finds the 14C in a sample of 15.3 dg of material to be decaying at 513 counts…
A: Radioactive decay happens when an unstable nucleus starts decaying into a stable nucleus.…
Q: Use the binding energy per nucleon curve in the figure above to determine how much energy must be…
A: The binding energy is equal to the amount of energy released in forming the nucleus or amount of…
Q: Identify the missing nuclides in the following decays: (a) 2Bi →? + He (b) Kr → ? + e + D (c) ?→He +…
A: a)the decay is alpha decay ,
Q: α decay producing 208 Pb . The parent nuclide is in the decay series produced by 232 Th , the only…
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Q: 3. Find the Q value of the following decay. Calculate the kinetic energy and velocity of the…
A: Massesm(Th230)=230.033128um(Ra226)=226.025403u m(He)=4.002603uc=3x108 m/s 88A)We have to find Q…
Q: The nuclide 238Np requires 4.2 MeV for fission. To remove a neutron from this nuclide requires an…
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Q: 198Au has a decay constant of 2.97 x 10-6 s-1. Activity of 1 g of the sample will be 9.03×1015 Bq.…
A: Unstable nuclei become stable by radiating energy. This process is called radioactivity. The rate at…
Q: Given that 137 Cz decays to 137 Ba with a gamma emission of 0.662 MeV in 85% of the decays, what…
A: Given that In 85% of the decays, there is gamma emission.Then subtract the percentage of decays with…
Q: A (ə) ?H + H - x + n 4 2He o He 3 3 H. A (b) ?H+ 스x → 글He + bn O He Не 3 Не 2 He 3 1 O H
A: a) Answer is H24e The unknown mass number is 2+3=A+1A=5-1=4 The unknown atomic number is 1+1=Z+0Z=2…
Q: Protactinium has a half life of 3.28 x 104 years. Estimate the decay constant.
A: Most of the heavy nuclei will undergo decay to become stable by reducing the number of neutrons or…
Q: Recently unearthed discoveries in North and South American archaeological sites show that charcoal…
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Q: Identify the missing nuclides in the following decays. (a) 212 83 Bi → ? + 4 2…
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Q: A sample of radioactive material is studied in a lab and is found to have a decay constant of 100 ×…
A: When an atomic nucleus becomes unstable they become stable by radiating energy this process is known…
Q: In a piece of rock from the Moon, the Rb content is assayed to be 1.89×1010 atoms per gram of…
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Q: An ancient club is found that contains 140 g of pure carbon and has an activity of 4 decays per…
A: Given Mass of carbon in ancient club = 140 gm Carbon activity = 4 decays /sec Living trees ratio of…
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- Compute the energy released in the fission reaction n + 239Pu → 137Xe + 100Zr + 3nIf you start at t = 0 a decay rate of r = 10,000 Cs -137 decays per second, how many decays per second would you expect to find after 70.0 s?The half-life of 233 U is 1.6 x 105 years. Calculate: 92 233 i) The number of atoms in 1 gram of U 92 ii) The decay constant, λ (state your answer as s´¹). 233 92 iii) The activity of BU
- The half life of 60Co is 5.7 years. Find the activity of 3.54 milligram of 60Co. Give your answer in decays/second (Bq) Round your answer to 3 significant figures. Add your answerβ+ decay of 52Fe .write the complete decay equation for the given nuclide in the complete ZAXN notation190, which has an atomic mass of 19.003577 u, decays via p decay to 19F, which has an atomic mass of 18.998403 u. How much energy is released in this decay process? (This energy goes to the kinetic energy of the electron and the antineutrino.)
- A 200.0 - mCi sample of a radioactive isotope is purchased by a medical supply house. If the sample has a half - life of 14.0 days, how long will it keep before its activity is reduced to 20.0 mCi?Trace amounts of 7Li were created during Big Bang Nucleosynthesis. Calculate the binding energy per nucleon for 7Li, in MeV showing two decimal places. Values: atomic mass of 7Li = 7.01600 u atomic mass of 7H = 1.00783 u atomic mass of a neutron = 1.00867 uFind the Energy emitted in the Alpha Decay of 238U in MeV. m(238U) = 238.050784 m(234Th) = 234.0436 m(4He) = 4.002602
- 0.1 mg of pure 239Pu (emitting Alpha particles) was found to decay with an activity of 1.38 x 107 d.p.m. Calculate the half-life of the radionuclide. 239Pu is formed from the beta decay of the radionuclide 239Np. how many curie (Ci) 239Np are required to produce 0.10 mg of sample 239PUIf it is known that 87% of an initial radioactive sample remains after 3 days, what is the decay rate λ of the sample in units of decays/day?β+ decay of 50Mn .write the complete decay equation for the given nuclide in the complete ZAXN notation.