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eng-08spring-CHM2046C-e102x01-b1c

eng-08spring-CHM2046C-e102x01-b1c - University of North...

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University of North Florida NAME _____ ________________________ CHM 2046C, General Chemistry II Exam 1 Spring 2008 25 January 2008 Instructions: DO NOT BEGIN UNTIL GIVEN THE SIGNAL TO START. The time allotted for this examination is 50 minutes; nonetheless, this exam ends at 11:50 am. No extra time will be given to transfer answers to the BROWN SCANTRON. Only allowed calculators may be used on this exam. You may be asked to erase your calculator memory. The first few pages include some potentially helpful information and the periodic table. There are two parts to this exam. o For part I, write your answers on the BROWN SCANTRON. Write the exam version next to your name o For part II, show all your work for full credit. At the end of the examination, hand in the BROWN SCANTRON and partial credit portion before leaving the room. Make sure your name is on those pages. Potentially useful information 1 in = 2.54 cm (exactly) 1 lb = 453.59 g 1 L = 1.0567 qt 1 amu = 1.66053873 ×10 -24 g e = 1.60217653 × 10 -19 C ° C = 5 / 9 ( ° F – 32) ° F = 9 / 5 ° C + 32 K = ° C + 273.15 N A = 6.0221421×10 23 1 J = 1 kg·m 2 /s 2 1 Pa = 1 N/m 2 1 cal = 4.184 J (exactly) 1 atm = 101.325 kPa = 760 mm Hg (exactly) = 760 torr (exactly) = 29.921 in Hg = 14.6956 lb/in 2 = 1.01325 bar PV = nRT PV T PV T 1 1 1 2 2 2 = d P MW RT = × MW dRT P = R L atm mol K J mol K = = 0 08206 8 314 . . P 1 = X 1 P total Standard molar volume at STP is 22.41 L KE mv = 1 2 2 P n V a V nb nRT + - = 2 2 ( ) u RT MW = 3 r r MW MW 1 2 2 1 = q = s·m· Δ T ln P H RT C vap = - + Δ ln P P H R T T vap 2 1 1 2 1 1 = - Δ
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NAME _____ ________________________ Exam 1 Page 3 of 8 Part I. Problems 1 – 20 are worth 3 points each. The maximum value for this part is 60 points. Each problem has ONE BEST ANSWER. Write the answers on the BROWN SCANTRON. Write the exam version on your BROWN SCANTRON next to your name. This is exam version beta-1-C . 1. What conditions are standard temperature and pressure (STP)?
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