Briefly explain the purpose of the following components in an HG-AAS instrument. a) Hollow cathode lamp (2) b) Monochromator (2) c) Atomisation chamber (2) 1.2. Discuss the processes involved during the atomisation of the sample in the flame atomic absorption spectroscopy (FAAS). (5) 1.3. The difference in energy between the excited state and the ground state in an atom is 3.371 x 10-19 J. Assume that the statistical weight (g*) for the excited state is 2 and that for the ground state (go) is 1. a) Calculate the relative population (or ratio) for the excited and ground state at a temperature of 2600 K. (4) b) If the temperature increases to 2610 K, calculate the percentage increase (%) in the ratio. (3) c) What difference does the temperature increase by 10 K have on the ratio of excited atoms to unexcited atoms? (2) Question