Answer to Question #345104 in Chemistry for Larry

Question

1 Calculate the frequency and wavenumber of an X-ray beam with a wavelength of 2.56Å.

2 Calculate the wavelength in cm and energy in joules of a photon of light with a frequency of 250MHz.

3 Guanosine has a maximum absorbance of 275nm. Ɛ= 8400 M-1 cm-1 and path length is 1cm, using a spectrophotometer, A was found to be 0.70. What is the concentration of guanosine?

4 The molar absorption coefficient of a glycogen-iodine complex is 0.20 at a light of 450nm. What is the concentration when the transmission is 40% in a 2cm cuvette?