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- Determine the number of total degrees of freedom and the number of vibrational degrees of freedom for the following species. a Hydrogen sulfide, H2S b Carbonyl sulfide, OCS c The sulfate ion, SO42 d Phosgene, COCl2 e Elemental chlorine, Cl2 f A linear molecule having 20 atoms g A nonlinear molecule having 20 atomsThe GeF molecule, which exists in the gas phase at high temperature, has a 2 electronic ground state. What are the term symbols of the electronic states that can be accessed by allowed electronic transitions?1. Properties of gasesDetermine the molecular mass M , specific gas constant R, mass-specific energy e fora gas at 500 Kelvin that consists purely of,(a) Carbon dioxide(b) Methane(c) KryptonYou may assume that the vibrational modes are inactive, but explicitly show wherethis assumption enters into your calculations.
- Answer the following questions in minimum 5 sentences 3. Describe the difference between real deviations from Beer’s law and those due to instrumental orchemical factors.4. How does an electronic transition resemble a vibrational transition? How do they differ?Chemistry The first excited electronic energy level of the helium atom is 3.13 ✕ 10−18 J above the ground level. Estimate the temperature at which the electronic motion will begin to make a significant contribution to the heat capacity. That is, at what temperature will 5.0% of the population be in the first excited state?The vibrational frequency of the ICl molecule is 1.15 ×1013 s-1. For every million (1.00 × 106) molecules in the ground vibrational state, how many will be in the first excited vibrational state at a temperature of 300 K?
- Arrange the following energies in order of increasing magnitude: a) the typical energy of a covalent single bond; b) the mean molecular translational energy for a gas at room temperature; c) the mean rotational energy of a diatomic molecule at room temperature; d) the vibrational energy for a diatomic molecule at room temperature; e) the ionization energy of H. Justify your order.Consider 1 mol of N2(g) at room temperature. Calculate the number of molecules in the ground rotational energy (J=0). Calculate also the average rotational energy per molecule.For a specific molecule the ground state is nondegenerate while the first excited state is doubly degenerate. The excited state is removed from the ground state by 380 cm-1. What must the temperature of the system be for i) 25% and ii) 45% of the molecule to be in the first excited state?
- 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.Consider a diatomic molecule that is highly susceptible to centrifugal distortion in its ground vibrational state. Do you expect excitation to high rotational energy leve ls to change the equilibrium bond length of this molecule? Justify your answer.Why does the vibrational state of a diatomic molecule affect its rotational constant? Is there an effect even if the potential is strictly parabolic?