Calculate the characteristic rotational constant for H₂ molecule. Given: The internuclear distance is 74.17 pm. 88.34 92.68 97.15 81.77

According to free-electron molecular orbital theory, the electrons in molecular are regarded as independent particle that in a box with the length L. (a)Draw two molecular orbital shape occupied at butadiene predicted by this model and predict the minimum excitation energy of the molecular. Tetraene can be considered a box with the length 8R, R is 140pm.(b)Calculate the minimum excitement energy and draw HOMO and LUMO.please explain the problem (a) and (b).

What will determine a change in the electric dipole moment of a molecule? What will determine a change of polarizability of a molecule during a vibration?

Consider the rotational temperatures of the following hetero diatomic molecules: θr(CO) = 2.1 K, θr(HF) = 30.2 K. In which case would the classical approximation be accurate? Justify your answer.

Q 1. Use the equipartition principle to estimate the value of γ = Cpm/CVm  for gaseous CH3COOH. Do this calculation WITH the vibrational contribution to the energy.

What are the total number of degrees of freedom and the number of vibrational modes for ethanol C2H6O?

Use the equipartition principle to estimate the value of γ = Cpm/CVm  for gaseous N2O5. Do this calculation WITH the vibrational contribution to the energy.  a. 1.07 b. 1.33 c. 1.4 d. 1.7 e. 1.5

559.7 cm¹, and a rotational constant, B = 0.244 cm ¹¹. 18. Chlorine has a vibrational constant, U = From this information, determine (a) the force constant and (b) the equilibrium bond length.

solve the question provided in the image.

Consider the rotational spectrum of a molecule XY. If the first line in this spectrum is observed at 3.84235 cm, calculate the internuclear distance in nm for the molecule XY. if the masses of X and Y are 19.92168 kg 26.56136 kg and respectively. 0.2761 nm 01356 nm 0.6953 nm 01131 nm