Chemistry 1A - Fall 2002 - Midterm 1

Chemistry 1A - Fall 2002 - Midterm 1 - Chemistry 1A, Fall...

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Chemistry 1A, Fall 2002 Midterm Exam I, Version A September 17, 2002 (90 min, closed book) Name: TA: SID: Section: Please read this first: Write your name and that of your TA on all 9 pages; On the Scantron TM , bubble in Form A. T est - taking Strategy This test consists of two parts: multiple choice ( answers to be circled and entered on the Scantron TM sheet ) and short answer. In order to maximize your score on the exam: Do the questions you know how to do first. Then, go back and spend more time on the questions you find more challenging. Budget your time carefully -- don't spend too much time on one problem. Show all work for which you want credit and don't forget to include units. Page Score MC 7 8 9 Total
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Name_______________________ TA _________________________ Potentially Useful Information 800 600 400 200 IR Red Green Blue UV Color and Wavelength of Light E = h = c deBroglie = h / p = h / mv E kin (e- ) = h - = h - h 0 R n Z E n 2 2 E kin = ½ mv 2 h = 6.626 x 10 -34 J s c = 3.0 x 10 8 m . s -1 R = 2.18 x 10 -18 J m e = 9.11 x 10 -31 kg 1 eV = 1.602 x 10 -19 J 1 nm = 10 -9 m 1 kJ = 1000 J
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Name_______________________ TA _________________________ Part I Multiple Choice (4 pts each, 88 pts total) Bubble in the correct answer on your Scantron TM form AND circle your answer on the exam. There is only one correct answer for each question, so you should circle and fill in one and only one answer for each question. There is no penalty for an incorrect response. 1.) Which neutral atom could have the configuration 1s 2 2s 2 2p 6 3s 2 3p 4 4s 1 ? A) K B) Cl C) Na D) Rb E) S 2.) W hat mass (in kg) of water (H 2 O) has the same number of molecules as 1.0 kg of acetylene (C 2 H 2 )? A) 0.69 B) 0.10 C) 18 D) 26 E) 200 3.) What is the molar concentration (mol/L) of oxygen (O 2 ) when 320 grams of oxygen gas are dissolved in 2.00 L of water? A) 0.02
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This note was uploaded on 04/01/2008 for the course CHEM 1A taught by Professor Nitsche during the Spring '08 term at Berkeley.

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Chemistry 1A - Fall 2002 - Midterm 1 - Chemistry 1A, Fall...

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