Mercury's atomic emission spectrum is shown below. estimate the wavelength of the dark green line. what is its hz what is the energy of an dark green photon emitted by the mercury atom?

Explanation:

From the atomic emission spectrum of Mercury, the wavelength of the dark green line is 545 nm.

The relation between the frequency and wavelength is given by :

Let E is the energy of an dark green photon emitted by the mercury atom. It is given by :

h is Planck's constant

Hence, this is the required solution.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.