Answer:
Explanation:
First Question
This question has to do with the mass defect in AMU.
It would get closer to the actual answer if I knew what mass of proton you are using and the mass of one neutron as well.
Formula
- Am = Z*m_h + (A - Z)*m_n - M
- Am is the mass defect
- Z is the atomic number (number of protons). 29
- m_h is the accepted mass of a proton. 1.0078
- A = Atomic Mass number 63
- m_n = mass of the neutron 1.0087
- M is the actual mass of the atom in question. 62.92958
Solution
Am = 29*1.0078 + (63 - 29)*1.0087 - 62.92958
Am = 0.59242 u The difference between what I get and D is that I don't exactly know what m_h and m_n are.
Second Question
The first step is to calculate the mass defect. Just use the formula above.
Givens
- Am = ?
- Z = 7
- A = 14
- m_h = 1.0078
- m_n = 1.0087
- M = 14.00307
Solution
Am = 7*1.0078 + (14 - 7)*1.0087 - 14.00307
Am=0.11243 u
1 u = 931.5 MeV
0.11243 u = x
x = 104.7285
This is more of a reading problem than a physics problem. They want the energy per nucleon, which is 14 (neutrons and protons).
E = 104.7285/14
E = 7.5 MeV
Answer
A
