4⁰K is an unusual isotope, in that it decays by negative beta emission, positive beta emission, and electron capture. Find the Qvalues for: (c) Electron capture
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- Q value for a reaction is the amount of energy absorbed or released during the nuclear reaction. The Q value will be equal l to the energy equivalent to the mass lost during the reaction.
- Q value of a reaction is given by,
Here mR is the mass of the reactant, mP is the mass of the product, and c is the speed of light.
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- Using the graph given, estimate how much energy is released when a nucleus of mass number 200 fissions into two nuclei each of mass number 100.Another series of nuclear reactions that can produce energy in the interior of stars is the cycle described below. This cycle is most efficient when the central temperature in a star is above 1.6 × 107 K. Because the temperature at the center of the Sun is only 1.5 × 107 K, the following cycle produces less than 10% of the Sun’s energy. (a) A high-energy proton is absorbed by 12 C. Another nucleus, A , is produced in the reaction, along with a gamma ray. Identify nucleus A decays through positron emission to form nucleus B. (c) Nucleus B absorbs a proton to produce nucleus C and a gamma ray. Identify nucleus C absorbs a proton to produce nucleus D and a gamma ray. Identify nucleus D. (e) Nucleus D decays through positron emission to produce nucleus E. Identify nucleus E. (f) Nucleus E absorbs a proton to produce nucleus F plus an alpha particle. What is nucleus F ? Note: If nucleus F is not 12C—that is, the nucleus you started with—you have made an error and should review the sequence…An unknown element X has the following isotopes: ⁶⁴X (49.00% abundant), ⁶⁶X (28.00% abundant), ⁶⁸X (23.00% abundant). What is the average atomic mass in amu of X?
- Question 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.) 23A) Calculate the total binding energy of the nuclei of 31P (of atomic mass 30.973907 uu ). Express your answer in million electronvolts to four significant figures. B) Calculate the total binding energy of the nuclei of 207Pb (of atomic mass 206.975897). Express your answer in million electronvolts to four significant figures. C) Calculate the binding energy per nucleon for 31P. Express your answer in million electronvolts per nucleon to four significant figures. D) Calculate the binding energy per nucleon for 207Pb. Express your answer in million electronvolts per nucleon to four significant figures.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 Answer
- The radioisotope Tc is an isotope that sometimes given to patients because it emits gamma rays and has a relatively short half-life of 6.05 h. Because emits gamma rays, 43 can be used as a tracer when performing imaging on a specific part of the human body. (a) Find the decay constant of "Tc (in h-l). h-1 (b) Find the number of Tc nuclei needed to provide an activity of 2.61 pCi. nucleiPlease asap