Exam2.FormB.BlueVersion.2010

Exam2.FormB.BlueVersion.2010 - Chem. 1B Exam 2 2010 Name:...

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Chem. 1B Exam 2 2010 Name: Last Name First Name FORM B There are a total of five pages ( 19 questions ) on the exam. Show all your work on the exam and circle the answers. You will keep the exam so you can check your answers. The answers to the exam will be posted on our course web page. Carefully check all your answers on your Scantron form. Make sure you have indicated one answer for each question. There is only one answer for each question. SCANTRON FORM: Completely fill bubbles 1) Write your name Completely fill answers 2) Bubble in FORM B 3) Bubble in your PERM number (7 digits only, no extra numbers) INFORMATION PAGE: Remove the information page. No other notes or books are allowed. INSTRUCTIONS: No hats or hoods allowed. No sharing of calculators. Cell Phones, iPods, headsets, and any other electronic devices must be turned off and put away. Remain seated until 9:50 AM 1. (6 pts) For the reaction A+ B + C D + E, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected: Trial [A] 0 ( M ) [B] 0 ( M ) [C] 0 ( M ) Initial Rate ( M/s ) 1 0.10 0.10 0.10 3.0 × 10 –5 2 0.10 0.10 0.30 9.0 × 10 –5 3 0.20 0.10 0.10 1.2 × 10 –4 4 0.20 0.20 0.10 1.2 × 10 –4 What is the overall order for the reaction? A) 5 ANSWERS are given at the end of the exam B) 3 C) 4 D) 1 E) 2 2. (6 pts) For the reaction A products, the reaction times for successive half-lives are observed to be 10.0 minutes, 20.0 minutes, and 30.0 minutes for an experiment in which [A] 0 = 0.20 M . What is the concentration of A at 60 minutes? A)
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Exam2.FormB.BlueVersion.2010 - Chem. 1B Exam 2 2010 Name:...

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