1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elden [556K]
3 years ago
12

A nuclear chemist measures the mass defect of nickel-56 and finds it to be 0.4667 amu. Based on this number, (a) calculate the n

uclear binding energy in units of joule and (b) calculate the binding energy per nucleon in units of joule. Show the complete processes and bold the final answers.
Chemistry
1 answer:
NNADVOKAT [17]3 years ago
5 0

Answer:

See explanation

Explanation:

Number of protons = 28

Number of neutrons = 28

Mass of each proton = 1.007277 amu

Mass of 28 protons = 28 * 1.007277 amu = 28.203756 amu

Mass of each neutron = 1.008665 amu

Mass of 28 neutrons = 28 * 1.008665 amu = 28.24262 amu

mass defect of nickel-56  = 0.4667 amu

Binding energy = Δmc^2

Binding energy = 0.4667 *(3 * 10^8)^2

Binding energy =4.2 * 10^16 J

Binding energy per nucleon = 4.2 * 10^16 J/56

Binding energy per nucleon = 7.5 * 10^14 J

You might be interested in
Which solution below has the highest concentration of hydroxide ions?a. pH= 3.21b. pH= 7.00c. pH= 7.93d. pH= 12.59e. pH= 9.82
Sloan [31]

Answer:

  • <em>The solution that has the highest concentration of hydroxide ions is </em><u>d. pH = 12.59.</u>

Explanation:

You can solve this question using just some chemical facts:

  1. pH is a measure of acidity or alkalinity: the higher the pH the lower the acidity and the higher the alkalinity.
  2. The higher the concentration of hydroxide ions the lower the acidity or the higher the alkalinity of the solution, this is the higher the pH.

Hence, since you are asked to state the solution with the highest concentration of hydroxide ions, you just pick the highest pH. This is the option d, pH = 12.59.

These mathematical relations are used to find the exact concentrations of hydroxide ions:

  • pH + pOH = 14 ⇒ pOH = 14 - pH

  • pOH = - log [OH⁻] ⇒ [OH^-]=10^{-pOH}

Then, you can follow these calculations:

Solution    pH        pOH                            [OH⁻]

a.               3.21       14 - 3.21 = 10.79        antilogarithm of 10.79 = 1.6 × 10⁻¹¹

b.               7.00      14 - 7.00 = 7.00        antilogarithm of 7.00 = 10⁻⁷

c.                7.93      14 - 7.93 = 6.07        antilogarithm of 6.07 = 8.5 × 10⁻⁷

d.               12.59     14 - 12.59 = 1.41        antilogarithm of 1.41 = 0.039

e.               9.82      14 - 9.82 = 4.18        antilogarithm of 4.18 = 6.6 × 10⁻⁵

From which you see that the highest concentration of hydroxide ions is for pH = 12.59.

5 0
2 years ago
What is the name of this hydrocarbon? 2–methylpentyne 2–dimethylpentene 2,3–dimethylpentane 3,2–dimethylpentane
Phantasy [73]
<span>on plato it's 2,3–dimethylpentane

</span>
6 0
2 years ago
Alexis was interested in the way mirrors reflect. The living room of Alexis' house had one big window in the front, and a very l
Phoenix [80]
It will only be valuable if proved correct so it's D
7 0
3 years ago
Read 2 more answers
Is copper sulphate dissolving in water a chemical change or physical change and why?
Pavel [41]

Because copper sulphate is not an ionic substance, no bonds are changed when it is dissolved. Thus it has to be a physical change

8 0
3 years ago
Germanium is classified as a<br> (1) metal (3) nonmetal<br> (2) metalloid (4) noble gas
hodyreva [135]
Germanium is classified as a metalloid. 
6 0
3 years ago
Read 2 more answers
Other questions:
  • Arrange these gases in order of decreasing standard molar entropy:
    8·1 answer
  • What assumption did you make about the reaction of kmno4 solution and h2c2o4 solution in those determinations that allowed you t
    11·1 answer
  • The effect of atoms colliding with the walls of a container is called ______.
    11·2 answers
  • How many Fe atoms and how many moles of Fe atoms are in 500.g of iron?
    14·1 answer
  • Very important !!!!!!!!!!!!
    15·1 answer
  • Slkjflsdfjsfjlsm d dd dd dld dld dd;s dpd<br><br>.
    9·1 answer
  • Question 16
    9·2 answers
  • A neutral atom in the ground state has four electrons in its fifth and outermost principal energy level. What element is it?
    11·1 answer
  • Classify the following substituents according to whether they are electron donors or electron acceptors relative to hydrogen by
    5·2 answers
  • Write balanced nuclear equations for the following:(b) Formation of francium-221 through α decay
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!