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
77julia77 [94]
2 years ago
14

For some hypothetical metal the equilibrium number of vacancies at 750°C is 2.8 × 1024 m−3. If the density and atomic weight of

this metal are 5.60 g/cm3 and 65.6 g/mol, respectively, calculate the fraction of vacancies for this metal at 750°C.
Chemistry
1 answer:
mash [69]2 years ago
4 0

Answer:

The correct answer is 5.447 × 10⁻⁵ vacancies per atom.

Explanation:

Based on the given question, the at 750 degree C the number of vacancies or Nv is 2.8 × 10²⁴ m⁻³. The density of the metal is 5.60 g/cm³ or 5.60 × 10⁶ g/m³. The atomic weight of the metal given is 65.6 gram per mole. In order to determine the fraction of vacancies, the formula to be used is,  

Fv = Nv/N------ (i)  

Here Nv is the number of vacancies and N is the number of atomic sites per unit volume. To find N, the formula to be used is,  

N = NA×P/A, here NA is the Avogadro's number, which is equivalent to 6.022 × 10²³ atoms per mol, P is the density and A is the atomic weight. Now putting the values we get,  

N = 6.022 × 10²³ atoms/mol × 5.60 × 10⁶ g/m³ / 65.6 g/mol

N = 5.14073 × 10²⁸ atoms/m³

Now putting the values of Nv and N in the equation (i) we get,  

Fv = 2.8 × 10²⁴ m⁻³ / 5.14073 × 10²⁸ atoms/m^3

Fv = 5.44669 × 10⁻⁵ vacancies per atom or 5.447 × 10⁻⁵ vacancies/atom.  

You might be interested in
If an atom has a mass number of 25 and an atomic number of 11 how many neutrons are there in this atom?
babunello [35]
C. 14
you would subtract the mass number from the protons or the atomic number because in order to find the mass number you would add the protons and neutrons :)
5 0
3 years ago
What reaction type is depicted by the following equation? 2C2H2 + 5O2 4CO2 + 2H2O
Nonamiya [84]
The answer is combustion
3 0
3 years ago
What is the difference between potential and kinetic energy
erik [133]
Potential energy<span> is the stored </span>energy<span> in an object due of its position or its configuration where as </span>Kinetic energy<span> is the </span>energy<span> which a body possesses because of its motion.</span>
4 0
2 years ago
Read 2 more answers
PLEASE HELP DUE IN 20 MINS I NEED HELP RIGHT NOW
butalik [34]
That looks like cells of a multicellular organism, so B.
8 0
2 years ago
Read 2 more answers
Is o-toluic acid soluble in ether, NaOH?, Is Napthalene soluble in NaOH?
natima [27]
Yes, o-toluic acid is soluble in ether as ether is slightly polar and it is soluble in NaOH because it is likely to form soluble compounds with it.

Naphthalene is insoluble in NaOH.
8 0
3 years ago
Other questions:
  • The potential energy diagram for a reaction starts at 380 kJ and ends at 100 kJ. What type of reaction does the diagram best rep
    6·2 answers
  • 67.029g to three significant figures
    15·2 answers
  • hat range, give the lower value and the higher value, respectively, for the following. (a) How many cubic meters of water are in
    15·1 answer
  • What are points a and b? What does this diagram show? Whats point c?
    10·1 answer
  • If you use a horizontal force of 32.0 N to slide a 12.5 kg wooden crate across a floor at a constant velocity, what is the coeff
    14·1 answer
  • Which substance is an inorganic compound?
    11·1 answer
  • How are phase changes related to kinetic energy? Justify your response in TWO OR MORE COMPLETE SENTENCES.
    14·2 answers
  • Environmental Science-JMajors-GEO-220029.001: Mastery Assess It_2 5. Most of the concentration of which gas results from the act
    9·1 answer
  • URGENT!!!! How many molecules of carbon dioxide are produced when a molecule of C7H15 combusts?
    10·2 answers
  • What is the average kinetic energy and rms speed of N₂ molecules at STP? Compare these values with those of H₂ molecules at STP.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!