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- A¡H° = 86 kJ mol-1 ,A;S = – 140 JK-1 mol-1 , T = 299 K Express your answer as an integer.Discuss the relation between the thermodynamic and statistical definitions of entropy.Consider a molecule having three energy levels as Part A follows: What is the probability that this molecule will be in the lowest-energy state? State Energy (cm-1) Degeneracy Express your answer to three significant figures. 1 1 500. 3 ΑΣφ 3 1500. 5 Imagine a collection of N molecules all at 400. K in which one of these molecules is selected. Pi = Note: k = 0.69503476 cm¬1 . K-1. Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining
- Given the following values of AHon, ASxn, and T, determine ASuniv- rxr Part A ΔΗΡ 90 kJ, ASxn 146 J/K, T = 294 K ? ASuniv J/K IIThe value of trangle H for the decompisition..3. Consider a 2 × 2 square lattice of spins interacting via the Ising Hamiltonian in the absence of a magnetic field: H = - ΣSi Sj, (ij) we have set J = 1. (a) Write down all the possible configurations and calculate the energy for each one of them. (b) Calculate the partition function Z, as a function of temperature, by summing over all configurations. (c) Repeat question (3a) and (3b), using periodic boundary condi- tions.
- 3po 2po Po 51 Vo 4 6: 2V 3Vo V Part A Calculate the work W done by the gas during process 1-2. Express your answer in terms of po and Vo. VD ΑΣΦ W = B ?Nitesh3. In a strictly steady state situation, both the ions and the electrons will follow the Boltzmann relation ( n; = n, exp(- qjø. ). Take Z=1, and calculate plasma kT electrostatic field.
- . The molar heat capacity of solids predicted by the Einstein model is given by hv e kBT hv Cy = 3R \kgT 2 hv 1-e kgT Determine the high-temperature limit of Cy, namely, lim Cy. T-0014.44) The lowest triplet state in naphthalene (C10H8) is about 11,000 cm-1 below then lowest excited singlet electronic level at 77 K. Calculate the ratio of the population in these two states. [Hint: The Boltzmann equation is given by N2/N1 = (g2/g1 exp(-ΔE/kBT), where g1 and g2 are the degeneracies for level 1 and 2.]The internal energy of a system A None of these В is the sum of the rotational, vibrational, and translational energies of all of its components refers only to the energies of the nuclei of the atoms of the component molecules D is the sum of the kinetic energy of all of its components E) is the sum of the potential and kinetic energies of the components