Compute the mean energy at 400 K of a two-level system of energy separation equivalent to 600 cm−1.
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Compute the mean energy at 400 K of a two-level system of energy separation equivalent to 600 cm−1.
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- The molar heat capacities at constant volume of Ne and N2 at 298 K are 12.47 J mol-1 K1 and 20.79 J mol-1 K-1 respectively. Give an explanation of these values based on statistical mechanics.A Stirling engine involves: (1) isothermal heat addition → (2) isochoric heat removal → (3) isothermal heat removal → (4) isochoric heat addition. The engine uses one mole of ideal monatomic gas and operates between a hot and a cold reservoir at temperatures TH = 400 K and To= 300 K, and a volume of V₁ = 1 L and V₂ = 3 L. Calculate the heat removal/addition in part (2) of the cycle. Select one: a. O b. b. C. Q = -2740 J Q = d. Q Q = 1247 J 3654 J = - 1247 JFor a dilute gas of N monatomic particles with mass m and total energy E, use the Sackur- Tetrode equation for the entropy S V = log + NkB to derive expressions for the pressure and internal energy in terms of the temperature T and volume V. [You may use that X₁ = 3πh² N/(mE).] th