Question

Asked Sep 26, 2019

1 views

Using the rigid rotor model, calculate the energies in Joules of the first three rotational levels of HBr, using for its moment of inertia I = μR^{2}, with μ = m_{H}m_{X}/(m_{H} + m_{X}) and equilibrium internuclear distance = 1.63 Å. To put these energies into units that make sense to us, convert energy to kJ/mol. (Simply estimate atomic masses from the average atomic weights of the elements given in the periodic table).

Step 1

Rotational energy (E) for one mole of HBr is calculated by equation (1) in which ‘h’ is the plank constant, I is the inertia, N_{A} is the Avogadro number and J is the rotational quantum number.

Step 2

The reduced mass (μ) for the molecule is calculated by equation (2) in which M_{H} is the mass of hydrogen in gram, M_{Br} is the mass of bromine in gram and N_{A} is the Avogadro number. The reduce mass for the HBr molecule is 1.64 ×10^{-24} g.

Step 3

The reduced mass 1.64 ×10-24 g of HBr in kilogram is e...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: How can 6 hydrogen atoms be covalently bonded in a molecule containing 2 carbon atoms?

A: The molecule in which 6 Hydrogen atoms are covalently bonded to 2 C atoms is Ethane.The structure of...

Q: Consider the following system at equilibrium where H° = 111 kJ, and Kc = 6.30, at 723 K.2NH3(g) N2(g...

A: Click to see the answer

Q: How many grams of water (18.02 g/mol) would contain 6.54x10^24 hydrogen atoms?

A: Given :Molar mass of water = 18.02 g/molNumber of H-atoms = 6.54 x 1024We need to calculate the gram...

Q: Most fertilizers consist of nitrogen-containing compounds such as NH3, CO(NH2)2, NH4NO3, and (NH4)2S...

A: Formula to calculate % composition:Mass % of element = mass of the element on the given formula / mo...

Q: What is the specific heat in J/g°C for a metal sample with a mass of 95.6 g which absorbs 841 J of e...

A: Heat, q = mass x specific heat x change in temperature.

Q: Pb2+ SO42- = PbSO4 2+ and 2- cancel each other out. Pb2+ Cl- = PbCl2 Where does the 2 from Cl2 come ...

A: In PbSO4 the valency of lead and sulfate are +2 and -2, hence they cancel out each other. The formul...

Q: Determine the classes of matter described by each question. Each question may describe more than one...

A: Homogeneous mixture is defined as a mixture in which all components are present in the same phase an...

Q: please answer question 4.

A: Given:Velocity (Δv) = 50.0 m/s.Mass of hydrogen atom = 1 amu = 1.66 x 10-27 Kg.

Q: An oxide of gadolinium contains 86.76 mass % Gd. What is its empirical formula? Possible Answers: ...

A: Given that the oxide of Gadolinium contains 86.76 mass percent Gadolinium. Then the mass percent of ...