The treatment of a particle in a one-dimensional box can be extended to a rectangular box of dimensions Lx, Ly, and Lz, yielding the following expression for energy.

E = h^2/8m((nx^2/Lx^2) + (ny^2/Ly^2) + (nz^2/Lz^2))

The three quantum numbers nx, ny, and nz independently can assume only integer values.

(a) Determine the energies of the three lowest levels, assuming that the box is cubic.
(b) Determine the degeneracies of all the levels that correspond to the quantum numbers having values of 1 or 2.
E111, E112, E122, E222
(c) How will these degeneracies change in the box where Lx ≠ Ly ≠ Lz?

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

Which best explains why an iceberg floats?

Ted and emily played a mixed doubles tennis match against jack and brenda. in the second match. ted and brenda played against jack and emily. which type of chemical reaction does the situation demonstrate?