An atom (not a hydrogen atom) absorbs a photon whose associated wavelength is 400 nm and then immediately emits a photon whose associated wavelength is 580 nm. How much net energy is absorbed by the atom in this process?

Explanation

To solve the problem of finding the net energy absorbed by the atom when it absorbs a photon of wavelength 400 nm and emits a photon of wavelength 580 nm, we will follow these steps:

### Step 1: Calculate the energy of the incoming photon (400 nm)
The energy of a photon can be calculated using the formula:
\[ E = \frac{hc}{\lambda} \]
where:
...