Exercises: 1. A Carnot engine generates work from the spontaneous heat transfer from a 400°C heat source to a 25°C heat sink. If 100 J of heat was supplied to this engine, what would be the amount of work that can be extracted from it? 2. A Carnot refrigerator is set to maintain a temperature of 0°C for a system against the surroundings that is at 30°C by actively transferring 100J of heat from the system to the surroundings. What about of work must this refrigerator expend to maintain the temperature difference?

Exercises: 1. A Carnot engine generates work from the spontaneous heat transfer from a 400°C heat source to a 25°C heat sink. If 100 J of heat was supplied to this engine, what would be the amount of work that can be extracted from it? 2. A Carnot refrigerator is set to maintain a temperature of 0°C for a system against the surroundings that is at 30°C by actively transferring 100J of heat from the system to the surroundings. What about of work must this refrigerator expend to maintain the temperature difference?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

s_engine.html?ClassID=1463972376# qH₂O +qcal = 1927 J qunknown-1927 J The thermal energy is supplied by a 36.0 g sample of unknown material at 125.0 °C. It reaches equilibrium with the water at 23.8 °C. What is the specific heat capacity of the material? c = [?] J/g °C Specific Heat Enter International Academy of Science. All Rights Reserved.
223 Calculate the change internal 122 energy (AU) for a system that is 223 giving off 45.0 kJ of heat and is doing 800 J of work on the surroundings? 22358 235808029 122 O A) 45.8 2235808029 12235808029 122 B) -45.8 22808029 12235808029 122 C) -755 2280e020 12235808029 122 -845 2280a02 12235808029 122 2288029 12235808029 122
The efficient design of chemical plants depends on the designer's ability to access and use the heat output in one process to supply another process. The standard enthalpy of reaction for N2(g) + 3H2(g) -> 2NH3(g) is -92.22 kJ/mol. What is the change in enthalpy when kJ. 3 sig. number in exponential format, e.g. 3.45E5, 5.32E- (a) 1464.5 kg of N2 (g) is consumed? 6, -4.44e3,.... (b) the change in enthalpy when 1308.5 kg of NH3 (g) is formed. kJ. 3 sig. number in exp. format.
The fuel in high-efficiency natural gas vehicles consists primarily of methane CH4 Part A How much heat is produced in burning 4 mol of CH4 under standard conditions if reactants and products are brought to 298 K and H2O(1) is formed? Express your answer using four significant figures. ? ΔΗ= kJ Submit Request Answer Part B What is the maximum amount of useful work that can be accomplished under standard conditions by this system? Express your answer using four significant figures.
The combustion of phosphorus follows: P4 + 50₂ → P4O10 AH = -3010kJ Determine the heat released, in kJ, when 11.81g of oxygen (0₂) react. Your answer should be NEGATIVE and numerical and neglect units (e.g., if you calculate 3.5kJ then input 3.5).
When a 4.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 4.39 kJ K-¹, the temperature decreases by 0.210 K. Calculate the molar heat of solution of KC1. AH soln = F V T B MacBook Air H N Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemistry Publisher: University Science Bool M K MOSISO 19 * F10 P command kJ/mol +
Only typed solution
Calculate the change in entropy (in J/K) when 400 mL of water at 33.8 ⁰C is heated to 55 ⁰C at constant pressure. Specific heat capacity of water at constant pressure is 4.183 J/g-K. Density of water at different temperature is presented (use this table only). Answer Format: [2 decimals
After 250 kJ of heat is added to a system, the internal energy of the system increases by 200 kJ. The external pressure remains constant during the process. What is q, w, ΔH and ΔE? ( Please type answer note write by hend )
A 250 kJ of work was done on a system and as a consequence, released 350 kJ of heat. Which of the following statements is correct? The sign of work is positive, the sign of heat is positive, and the change in internal energy of the system is 600 kJ. The sign of work is positive, the sign of heat is negative, and the change in internal energy of the system is -100 kJ. O The sign of work is negative, the sign of heat is positive, and the change in internal energy of the system is +100 kJ. O The sign of work is negative, the sign of heat is negative, and the change in internal energy of the system is -600 kJ. O The sign of work is negative, the sign of heat is positive, and the change in internal energy of the system is 600 kJ.
Consider a piston (or box) pressurized with air. Suppose you compress the piston so that the final volume is half the starting volume but the temperature remains the same. For a reversible process, i) would the work done on the system be the same or change whether you modeled the gas ideal or real? ii) For an irreversible process, would the work done on the system be the same or change whether you modeled the gas as ideal or real assumng that you applied the same external force for compression? Explain your answer.
8) Kirchhoff's Law Calculate the reaction enthalpy for the following reaction (ARH° = - 282.98 kJ mol¹¹) at a temperature of 400 °C: CO+0.502 → CO₂ In your calculations, consider the temperature-dependency of the molar heat capacities as follows: Cp (CO) = (21.75 +0.064 T-4.1.10-5T2)Jmol-¹K-1 Cp(O2) = (27.96 +0.004 T-1.7 10-7T²)Jmol¯¹K−¹ Cp (CO2)=(27.63 +0.005 T)Jmol-1K-1