1. A sample of radioactive material produces 1.2 millicuries of radiation. The h
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Question
1. A sample of radioactive material produces 1.2 millicuries of radiation. The half life of this radioactive nucleus is 6.00 months. How many years will it take for this radioactivity to decay to 1.0 microcuries?
2. The atomic mass of 47 107Ag = 106.9041. The atomic mass of a proton = 1.00783 , while that of a neutron = 1.00866. Calculate the binding energy per nucleon in Mev for this isotope of silver. Remember that 1 amu corresponds to 931.5 Mev of energy.
3. Write down the anode reaction and the cathode reaction for the lead storage battery.
4. Indicate how a nucleus that has too high a neutron to proton ratio may fall into the valley of stability. Next indicate ho a nucleus with too low a neutron to proton ratio may fall into the valley of stability.
Can you please show work. I need to learn how to do these for my Final Exam, thank you so much!
Explanation / Answer
A) 1.2 millicuries = 1200microcuries
1200 / 2^x = 1
2^x = 1200
x = 10.22
Half life = 6 months
Therefore 10 halflifes appx = 10 x 6 months = 60 months = 5 yrs
C)Pb + SO42
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