The wavelength of the strong lines in the mercury spectrum are: Violet 404.6nm moderate intensity
407.8nm weak
435.8nm Strong
Blue Violet 491.6nm very weak
Blue Green 546.1nm strong
Green 577nm strong (unresolved)
Yellow 579nm strong (unresolved)

Requried:
a. Calculate from the provided data the wavelengths of sodium light and the separation between the doublets, and compare the calculated value and the accepted value.
b. Calculate from your data the wavelength of each of the mercury lines and compare each calculated value and the accepted wavelength.
c. Determine, using Equation (1), which of the lines are to be expected in the second, third, fourth, and fifth order of the mercury spectrum for the grating used. Compare with observation.

Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450°c at a steady rate of 5 kg/s. in normal operation, steam expands in a turbine to a pressure of 0.5 mpa and is then routed to the process heater, where it supplies the process heat. steam leaves the process heater as a saturated liquid and is pumped to the boiler pressure. in this mode, no steam passes through a condenser, which operates at 20 kpa. (a) determine the power produced in the turbine and the rate at which process heat is supplied in this mode. (b) determine the power produced in the turbine and the rate of process heat supplied if only 60 percent of the steam is routed to the process heater and the remainder is expanded to the condenser pressure. (3.32 mw; 9.69 mw; 4.25 mw; 5.82 mw)