C6HW10a_15 - 12/18/11 View Attempt 1/4

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Unformatted text preview: 12/18/11 View Attempt 1/4 learn.uh.edu/webct/urw//ViewStudentAttempt.dowebct?attempt=5154915 VieZ Attempt 15 of unlimited Title: C6HW10a Started: November 19, 2011 4:11 PM Submitted: November 19, 2011 4:32 PM Time spent: 00:20:52 Total score: 7/10 = 70% Total sc ore adjusted by 0.0 Maximum possible sc ore: 10 Done 1. Thermal dec omposition of 5.0 metric tons of limestone to lime and c arbon dioxide requires 9.0 x 10 6 kJ of heat. Convert this energy to joules Student Response Correct AnsZer A. 9.0 x 10 8 J B. 9.0 x 10 4 J C. 9.0 x 10 3 J D. 9.0 x 10 9 J E. None of these is within 5% of the c orrec t answer Sc ore: 1/1 2. What is the c hange in internal energy (in J) of a system that absorbs 0.615 kJ of heat from its surroundings and has 0.247 kc al of work done on it? Student Response Correct AnsZer A. 1.65 x 10 3 J B. 4.15 x 10 2 J C. 1.65 J D. 1.03 x 10 3 J E. -1.65 x 10 3 J Sc ore: 1/1 3. What is the c hange in internal energy (in J) of a system that absorbs 5.48 kJ of heat from its surroundings and has 5.53 kc al of work done on it? Express your answer in sc ientific format:surroundings and has 5....
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C6HW10a_15 - 12/18/11 View Attempt 1/4

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