4⁰K is an unusual isotope, in that it decays by negative beta emission, positive beta emission, and electron capture. Find the Q values for: (b) positive beta emission
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Q: (Answer in MeV) Question in image
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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
Q: 3. An ancient club is found that contains 150 g of pure carbon and has an activity of 5.5 decays per…
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Q: Gamma rays may be used to kill pathogens in ground beef. One irradiation facility uses a 60C source…
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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: Question 10 of 22 Radium (A = 226, Z=88) decays to Radon (A = 222, Z=86) with a half-life of 1600…
A: in this question we discuss about decay of radioactive substances.
Q: A living specimen in equilibrium with the atmosphere contains one atom of 14C (half-life = 5 730 yr)…
A: Determine the number of carbon molecules per mole. Determine the initial number of atoms of C-14.
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Q: A 70-kg worker is accidentally exposed for 2.0 minutes to a 21-mCi source of beta radiation from a…
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Q: Iodine-131, a beta emitter, has a half-life of 8 days. A 2-gram sample of initially pure iodine-131…
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Q: A living specimen in equilibrium with the atmosphere contains one atom of 14C (half- life = 5 730…
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Q: A piece of charcoal used for cooking is found at the remains of an ancient campsite. A 0.92-kg…
A: The initial activity of the sample can be obtained as R0=0.92×103 g15.0 decays/min11g=1.38×104/min
Q: A 60-kg person accidentally ingests a small source of alpha particles (RBE=15). The activity of the…
A: (i) Number of particles absorbed is equal to the number of particles decayed
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Q: A living specimen in equilibrium with the atmosphere contains one atom of ¹4℃ (half-life = 5 730 yr)…
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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…
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- You have a sample of unknown medication that is radioactive. You believe you should be able to identify the medication if you can deduce its half-life. You measure its initial activity as 2.30e+06 Bq. 10.4 hours later you measure its activity as 8.10e+05 Bq. a) What is the half-life of this unknown sample? hour b) How many nuclides are present when the activity is 8.10e+05 Bq?By READING the N vs t graph shown below, determine No & the half-life. N (x10¹ atoms) 120 90. 60. 30. 1 2 3 4 5 6 7 8 9 10 t(y) No = half-life = atomsQuestion 3. Two nuclei having the same mass number are known as isobars. (a)Calculate the difference in binding energy per nucleon for the following two isobars Na and Mg. (b) How do you account for this difference? (The mass of ?3Mg = 22.994 127 u.) 23
- Part A Calculate (in MeV) the total binding energy for 40 Ar. Express your answer in mega-electron volts to four significant figures. ? MeV Submit Previous Answers Request Answer X Incorrect; Try Again; 7 attempts remaining Part B Calculate (in MeV) the binding energy per nucleon for 40 Ar. Express your answer in mega-electron volts to three significant figures. Ην ΑΣφ ? Var = MeV Submit Request Answer Part C Calculate (in MeV) the total binding energy for 40K. Express your answer in mega-electron volts to four significant figures. nνα ΑΣφ ? BK = MeV Submit Previous Answers Request AnswerI need the answer as soon as possible