Question

1.         Calculate the frequency, in Hz, for the red spectral line of hydrogen with a wavelength of 656 nm. (3 s.f.)

2.         Determine the value of 1/λ, with λ in meters, for the red spectral line above (yes, it is that easy – 1 divided by lambda. Be careful of the conversion to m^–1unit).

3.         The Rydberg equation can be thought of as 1/l= (Ryd)(transition value). Determine the “transition value” from n = 4 to n =2.  (Don’t determine the energy, nor the wavelength, of the photon, but just the “transition value” from the nvalues.)

4.         Light can be thought of as a collection of photons, each with a discrete amount of energy.  Are the photons associated with red light of higher energy or of lower energy than the photons associated with blue light?  How do the wavelengths and frequencies of Red light and Blue light differ?

5.         A student analyzing a green solution with a Spectronic 20 sets the instrument to give a background (Blank) reading of 98.5%T with distilled water when set at a wavelength of 735 nm, then obtains a 39.7%T reading for the solution at the same wavelength.  Determine the Absorbance of the solution at this wavelength.

Answer 1

kindly post different questions separately. please rate