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cee111-fa05-mt1-Nazaroff-exam

cee111-fa05-mt1-Nazaroff-exam - CE 111 Environmental...

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CE 111: Environmental Engineering SAMPLE MIDTERM EXAM #1 (from 12 October 2005) 1 NAME GROUND RULES : This is a closed-book/closed-note exam, except that you are permitted one sheet of notes. Do your work on the paper provided. Please be sure that your name is written on each page you submit. Also, please be sure that the problem number and your answer are clearly indicated. The total score possible is 20 points, and the time allowed is 50 minutes. Use the time wisely. Good luck! REMINDER : Read the questions carefully , and be certain you are responding appropriately. HINTS : (1) If you seem to be missing an important piece of information, assume a reasonable value, state your assumption, and proceed. (2) Partial credit is granted, but only if your work can be understood (and your thinking is reasonable). (3) See below for potentially relevant information. #1 (3 max.) ______ #2 (6 max.) ______ #3 (6 max.) ______ #4 (5 max.) ______ TOTAL SCORE (20 max.) Results: UG N = 37, mean = 13.5; G N = 6, mean = 15.4 DATA AND RELATIONSHIPS Atomic masses (g/mol) : H - 1, C - 12, N - 14, O - 16 Composition, dry atmos. : N 2 - 79%, O 2
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