Question

The binding energy per nucleon vs A graph was used to explain why fission and fusion both result in the release of energy (positive Q-value reactions). Explain how the data is used to show why this is true.

Answer #1

Give an account of nuclear binding energy, accompanied by a
labelled graph of binding energy per nucleon versus the number of
nucleons that explains why some elements undergo fission reactions
whilst some undergo fusion reactions.
A 1 megaton nuclear bomb produces 0.45 kg of an isotope of 90Sr
and the fallout spreads uniformly over an area of 110 km2 . 90Sr
decays with a half-life of 29 years. Determine the ground area that
holds an amount of radioactivity equal to...

Which of the following statements regarding fission and fusion
reactions is true, assuming that the final particles in each case
are more stable than the initial particles?
Both fusion and fission release energy.
Fusion releases energy and fission absorbs energy.
Fusion absorbs energy and fission releases energy.
Both fusion and fission absorb energy.

Explain why, on the curve of binding energy, the average binding
energy per nucleon of 4He2 is greater than that for 6Li3, a nuclide
with a greater atomic mass than helium-4? (Give a written
explanation. No calculations are required.)

Consider the nuclear fusion reaction
2H+6Li→4He+4He
What is the change in binding
energy per nucleon in this reaction? The answer units should be in
MeV/nucleon

What is the average binding energy per nucleon for Argon-40
(A=40, Z = 18) in MeV/nucleon? Note - keep 4 significant
figures.
The answer is 8.595 but I'm not sure how to get to this
answer.

What is the binding energy per nucleon (n MeV) for Tc-99? Data:
The mass of Tc-99 is 99.79 amu. Use 1.00727647 amu for the mass of
a proton and 1.00866492 amu for the mass of a neutron.

Calculate the nuclear binding energy per
nucleon for H-2 in MeV.
Your answer needs to have 4 significant figures.
Data: The mass of H-2 is 2.014 amu. Use 1.00727647 amu for
the mass of a proton and 1.00866492 amu for the mass of a
neutron.

Find the average binding energy per nucleon of
92
42
Mo
and
63
29
Cu.
(For the atomic masses, see this table. Enter your answers to at
least two decimal places.)
(a)
92
42
Mo
Your response differs from the correct answer by more than 100%.
MeV/nucleon
(b)
63
29
Cu
Your response is within 10% of the correct value. This may be due
to roundoff error, or you could have a mistake in your calculation.
Carry out all intermediate...

The binding energy of a potassium chloride molecule (KCl) is
4.43 eV. The ionization energy of a potassium atom is 4.3 eV, and
the electron affinity of chlorine is 3.6 eV. Use these data to
estimate the equilibrium separation between the two atoms in the
KCl molecule. Explain why your result is only an estimate and not a
precise value.

Suppose the equilibrium price of gasoline is $3 per
gallon.
a.
Using the demand and supply graph, draw this equilibrium in the
space below. Make this graph large, it will be used for future
questions.
b.
Now suppose the government imposes a binding price ceiling on this
market. Identify a value for this price ceiling that would be
binding and show it on the graph. Graphically show whether excess
demand or excess supply would result.
c.
With the price ceilings,...

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