Quiz 1 DL Sec: Grading: (office use only) First three letters of your last name: Student ID: Name: (last) (first) 1. (20 points) Imagine that you place a piece of lead, whose initial temperature is 0 °C, in contact with some amount of liquid water, whose initial temperature is 100 °C. Assume that the physical system consisting of the lead and the water are thermally isolated from everything else, and that they can only exchange energy in the form of heat with each other. a. If the two substances are allowed to come to thermal equilibrium, what can be said about the final temperatures of the two substances? (Circle all that apply, 3 points) i. The final temperatures of both substances are the same. ii. The final temperature of both substances is 50 °C. iii. The final temperature of both substances is between 0 °C and 100 °C. iv. The final temperature of water is greater than the final temperature of lead. b. Sketch two three-phase diagrams, one for each pure substance, clearly identifying the initial and final points. (5 points) c. Is this situation best described by an open or closed system? Explain your choice. (1 point) d. Draw a complete energy interaction diagram that models this system. (10 points) e. After reaching thermal equilibrium it is determined that the lead undergoes a change in thermal energy of 1696 kJ. What will the change in thermal energy be for the water? (1 point)Rubric a. Answer: i & iii Ltr Description Pts A Correct 3 B Two selected, but only one is correct 1 C Only one selected, but it is incorrect 0 D Three selected, two correct plus an additional incorrect 2 E Nothing selected 0 F One selected, and it is correct 2 b. Answer: Ltr Description Pts L Correct 5 M Correct, but missing initial temperature value on y-axis 4 N Claims lead undergoes a phase change 3 O Final temperature not clearly indicated 4 P Claims water undergoes a phase change 2 Q Claimed both undergo phase changes 0 R Incorrect phase/temperature boundaries 0 S Multiple errors 0 c. Answer: Closed is best because the system of lead and water is insulated. Ltr Description Pts G Correct 1 H Correct answer, but explanation is incorrect 0 I Incorrect answer 0d. Answer: Ltr Description Pts T Correct 10 U Correct, but missing description of physical system and/or missing interval 7 V Correct, except wrong equation 5 W Both U & V 3 X Correct, but some errors in bubble part of diagram 7 Y Correct, but temperature indicator is incorrect 6 Z Some combination of W, X, and Y 1 A No diagram 0 e. Answer: -1696 kJ Ltr Description Pts J Correct 1 K Correct value, but wrong sign 0 L Incorrect