Directions: Solve the following word problem. Use a separate paper for your solution and box the final answer. 1. A system releases 125 kJ of heat while 104 kJ of work is done on the system. Calculate the change in internal energy (in kJ). 2. The work done when the gas is compressed in a cylinder is 462 J. During this process, there is a heat transfer of 128 J from the gas to the surroundings. Calculate the energy change for this process. 3. A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 73 J of heat while 35 J of work is done on it. Step 2: The system absorbs 35 J of heat while performing 72 J of work. Calculate the change in internal energy for the overall process (in J). Directions: Answer the following word problems. Write your answer on your answer sheet. 1. Calculate AE for each of the following cases: Q- + 51 kJ, W - - 15 kJ Q- + 100. kJ, w -- 65 kJ Q-- 65 kJ, W - - 20 kJ In which of these cases does the system do work on the surroundings? 2. Calculate AE for each of the following: Q--47 kJ, W - +88 kJ Q- +82 kJ, W - +47 kJ Q- +47 kJ, W -0 In which of these cases do the surroundings do work on the system?

Directions: Solve the following word problem. Use a separate paper for your solution and box the final answer. 1. A system releases 125 kJ of heat while 104 kJ of work is done on the system. Calculate the change in internal energy (in kJ). 2. The work done when the gas is compressed in a cylinder is 462 J. During this process, there is a heat transfer of 128 J from the gas to the surroundings. Calculate the energy change for this process. 3. A system undergoes a process consisting of the following two steps: Step 1: The system absorbs 73 J of heat while 35 J of work is done on it. Step 2: The system absorbs 35 J of heat while performing 72 J of work. Calculate the change in internal energy for the overall process (in J). Directions: Answer the following word problems. Write your answer on your answer sheet. 1. Calculate AE for each of the following cases: Q- + 51 kJ, W - - 15 kJ Q- + 100. kJ, w -- 65 kJ Q-- 65 kJ, W - - 20 kJ In which of these cases does the system do work on the surroundings? 2. Calculate AE for each of the following: Q--47 kJ, W - +88 kJ Q- +82 kJ, W - +47 kJ Q- +47 kJ, W -0 In which of these cases do the surroundings do work on the system?

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...

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