When metallic sodium is dissolved in liquid sodium chloride, electrons are released into the liquid. these dissolved electrons absorb light with a wavelength near 800 nm. suppose we treat the positive ions surrounding an electron crudely as defining a three-d cubic box of edge l, and we assume that the absorbed light excites the electron from its ground state to the first excited state. calclulate the edge of length l.

Explanation:

When absorbing light, we use the UV Vis sprectrophotometre. When using this object we measure the peak at which our sample will absorb which in this case is 800nm. Then for calculating anything regarding this experiment, we use the following eq

where A is absorbance, e is the coefficient of molar absorbance, b the lenght of the box (L) and c the concentration of the sample. By using this equation, and having A, e and c we can obtaing L.

the molecules move in straight line until they collide with each other or with the walls of the container. collisions are perfectly elastic; when two molecules collide, they change their directions and kinetic energies, but the total kinetic energy is conserved.

explanation:

idk what the question is about