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Unformatted text preview: / [email protected] (print last n~e) (first n~e) (m.i.) I CHEM Print N~e: EXAM # 2 Social Security No.:--1--1 1 1--1--1-- SPRING 2005 Recitation Section No.: Date: 3/11/05 Recitation Section Instructor: Dr. Bob Conley DIRECTIONS (IF YOU FAil TO FOllOY DIRECTIONS #1 AND #2 CORRECTLY, YOU Ylll lOSE TYO (2) POINTS ON THIS EXAM) 1. First fill in the infonnation at the top of this paper. Print your last name as it appears on the class roster, then print your first name and middle initial. Then read and sign the honor code statement below. Finally fill in the requested infonnation on the SCAN- TRON ANSWER SHEET according to the following scheme: Print your name in the space labeled NAME - (print last name first) . Sign your name in the space labeled SUBJECT Enter your Recitation Section # in the space labeled DATE Enter your Rec. Sec. Instructor's name in the space labeled HOUR 2. The last page of this exam is a periodic table. It also has a list of several important constants. You may carefully remore this last page, if you choose, but do not open the staple. 3. This exam consists of two parts, A, and B. PART A has 16 multiple choice questions worth four points each. Each question has only one correct answer, and no credit is lost if you choose a wrong answer. Therefore, leave no question unanswered, even if you simply must guess. 4. PART B consists of three problems numbered I, II, and III. Show all work, show how the units cancel to give the final units on your answer, and report your answer to the proper number of significant figures, rounding properly as you do so. No credit is given simply for the correct answer -- credit is given only for the correct method and accompanying work. Part credit is given where appropriate. Write your final answers in the spaces provided. HONOR CODE STATEMENT: On my honor I pledge that I have not violated the provisions of the NJIT student honor code. Signature: DO NOT WRITE BELOW THIS LINE PART A: (64) (12) Top Third PART B: #1 #2 (12) (12) Middle 3rd #3 Last Third TOTAL SCORE: ... .CHEMISTRY 121-- SPRING 2005 n COMMON EXAM #2 Page-1- PART A (16 multiple choice questions worth 4 point each; 20 minutes) 1. H2S + °2---~ H2O + S03 When this equation is balanced, the sum of the smallest set of interger coefficients will be 2. A compound contains 30.5% nitrogen and 69.5% oxygen by weight and has a molecular weight greater than 50 amu. What is its molecular formula?...
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- Spring '10
- Avogadro constant, b. c. d.