ow you can integrate the carbon isotope with the gamma-ray to build up a complete sequence
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Explain how you can integrate the carbon isotope with the gamma-ray to build up a complete sequence?
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- Phosphorus has one stable isotope, 31P. The isotope 32P is a neutron-rich radioactive isotope that is used in nuclear medicine. What is the likely daughter nucleus of 32P decay?The unified atomic mass unit, denoted u, is defined to be 1 u = 1.6605 × 10^-27 kg. It can be used as an approximation for the average mass of a nucleon in a nucleus, taking the binding energy into account. How much energy, in megaelectron volts, would you obtain if you completely converted a nucleus of 9 nucleons into free energy?Why is uranium-235 used in nuclear fission? why is uranium-235 one of the only elements ideal for nuclear fission to create energy? Is there a link between its stability and its size?
- How do you solve this?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?Modern household smoke detectors contain a tiny speck of the element Americium (Am, atomic number 95, atomic mass 241), which has a half-life of 432 years and an activity of (roughly) of 37,000 decays per second. a) What is the approximate mass of this speck? (Hint: the atomic mass of this isotope is approximately 241.06 u). b) This isotope is an alpha emitter. Is its radiation likely to be a hazard to the household members while the smoke detector is on the ceiling? Explain.
- 3. When a star is on the Horizontal brunch it burns Helium via triple alpha reactions. During a triple alpha reaction we know that 3 Helium are transformed into Carbon as in $3 \times{ }^4 \mathrm{He} \rightarrow{ }^{12} \mathrm{C}$. Estimate the duration of the horizontal branch phase in a $2 M_{\odot}$ star through the following steps:(a) Compute the energy released in a net triple alpha reaction.(b) Assume that at the beginning of the horizontal branch phase, $15 \%$ of the original mass of the star is in the form of ${ }^4 \mathrm{He}$ in the stellar core. Estimate the total energy released by fusing this amount of helium into carbon via the triple-alpha process.(c) Assume that during the horizontal branch phase $L=175 L_{\odot}$. If all this luminosity is provided by the fusion of helium to carbon in the core, how long (in years) will the horizontal branch last?The unified atomic mass unit, denoted u, is defined to be 1 u = 1.6605 × 10^-27 kg. It can be used as an approximation for the average mass of a nucleon in a nucleus, taking the binding energy into account. How much energy, in megaelectron volts, would you obtain if you completely converted a nucleus of 8 nucleons into free energy?Show what is meant by the radioactive half-life of a radionuclide, using a suitable sketch graph. Mark two half-lives on your graph. Also use your graph to show the relationship of the halflife with τ, the decay constant, or characteristic decay time and τ−1, the decay rate.