How to Determine the Number of Atoms in a Given Volume of Al2O3?

  • Thread starter Thread starter chrisg20
  • Start date Start date
  • Tags Tags
    Atoms Container
chrisg20
Messages
2
Reaction score
0

Homework Statement


Given a volume of Al2O3, how many atoms of each element?


Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
welcome to pf!

hi chrisg20! welcome to pf! :wink:

tell us what you think, and then we'll comment :smile:
 
I have the density of Al2O3 as 3.97 Mg/m3. The volume of the material is 25.45mm3. Since mass=density x volume, I can get the mass but don't know how to find the number of atoms from there.
 
Thread 'Need help understanding this figure on energy levels'

Thread 'Need help understanding this figure on energy levels'

This figure is from "Introduction to Quantum Mechanics" by Griffiths (3rd edition). It is available to download. It is from page 142. I am hoping the usual people on this site will give me a hand understanding what is going on in the figure. After the equation (4.50) it says "It is customary to introduce the principal quantum number, ##n##, which simply orders the allowed energies, starting with 1 for the ground state. (see the figure)" I still don't understand the figure :( Here is...
View full post »
Thread 'Understanding how to "tack on" the time wiggle factor'

Thread 'Understanding how to "tack on" the time wiggle factor'

The last problem I posted on QM made it into advanced homework help, that is why I am putting it here. I am sorry for any hassle imposed on the moderators by myself. Part (a) is quite easy. We get $$\sigma_1 = 2\lambda, \mathbf{v}_1 = \begin{pmatrix} 0 \\ 0 \\ 1 \end{pmatrix} \sigma_2 = \lambda, \mathbf{v}_2 = \begin{pmatrix} 1/\sqrt{2} \\ 1/\sqrt{2} \\ 0 \end{pmatrix} \sigma_3 = -\lambda, \mathbf{v}_3 = \begin{pmatrix} 1/\sqrt{2} \\ -1/\sqrt{2} \\ 0 \end{pmatrix} $$ There are two ways...
View full post »

Similar threads

Electrostatic Energy in the Hydrogen Atom
Replies
4
Views
4K
How to get the volume per atom when given the unit cell size?
Replies
7
Views
7K
Number of atoms trapped in an atom trap
Replies
15
Views
4K
How Many Beams Are Hydrogen Atoms Deflected Into in a Magnetic Field?
Replies
12
Views
5K
Visualizing lattice/atoms in cubes?
Replies
1
Views
1K
How Does Removing High Energy Atoms Affect Temperature and Pressure in a Gas?
Replies
6
Views
2K
Determine the value of r1 and E for given wavefunction of hydrogen
Replies
5
Views
1K
Lattice constant and volume density
Replies
1
Views
4K
Adiabatic Approximation in Hydrogen Atom
Replies
6
Views
2K
Number of atoms in FCC gold cube with only the radius given
Replies
2
Views
3K

Hot Threads

Recent Insights

Back
Top