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owLV2 | Online teaching >G sjc cengagenow.com/ilrn/takeAssignment takeCovalent Activity do?locator-assignment take&takeAssignmentSessionLocator;=assignment take ::: Apps Can as 'CengageNow n @ MyMathLab Pearso Webadvisor @ Pearson REVEL English-101c a Rentals Cart D Formula name searc Wolfram Alpha Nuclear Chemistry- Introduction-Chapter 19 [Review Topics] 1. Radioactivity 3 pts M Uise the References to access important values if needed for this question. 2 Nuclear Reaction: identity Decay R3pts What is the binding energy in kJ/mol Cu for copper-65? 2931 365a-29Cu The required masses (g/mol are: H1.00783 n-1.00867:Cu 64.92780 kJ mol 3. Nuclear Reaction: Predict Decay Pr.. 3 ptsM 05 4 pts 5. Radionuclides in Medical Imaging 2 pts 6. Binding Energy 5 pts 2req Submit Answer Retry Entire Group 7 more group attempts remaini ng Question Question 0 Type here to search 1:58 PM 12/8/2017Explanation / Answer
The atomic mass of Cu-65 is 64.9278 amu. Calculate the nuclear binding energy of this
nucleus and the corresponding nuclear binding energy per nucleon
Mass number = 65
No. of protons = 29, then
Neutrons = Mass number – proton number = 29 protons and 65-29= 36 neutrons are present
Mass of proton = 1.00783
Mass of neutrón = 1.00867
Total mass = 36* 1.00783+ 29*1.00867= 65.53331amu
The mass defect:
64.9278-65.53331= -0.60551amu
Mass = 0.60551/(6.022*10^23) = 1.00549*10^-24 g or -1.00549*10^-27 kg
Energy released (Einstein E = mC^2)
E = m*C^2 = -1.00549*10^-27 * (3*10^8)^2 = -9.049*10^-11 J
Nuclear binding energy = E = -9.049*10^-11 J
Nuclear binding energy per nucleon
Nucleon = neutron + protons = 65
E per nucleon = E / nucleon =( -9.049*10^-11)/( 65) = 1.3921*10^-12 J/nucleon
change to kJ/mol
( 1.3921*10^-12)(6.022*10^23)/(1000) = 838322620 kJ/mol
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