• You are working as a spectroscopist, analyzing absorption data for electromagnetic radiation incident on molecular gases. In one experiment, you wish to measure the effective spring constant of a diatomic molecule, consisting of two atoms, each of mass 1.67 ✕ 10⁻²⁷ kg. You know that two masses vibrating on the ends of a spring can be modeled as one particle on the spring with the equivalent particle having the reduced mass
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= N/m mm2 m1 + m2 (See the example Molar Specific Heat of Hydrogen Gas.) When a pure gas of these diatomic molecules is irradiated, an absorption occurs at a wavelength of 2.27 m. Determine the spring constant (in N/m) that you record in your lab notebook for this molecule.