Chemistry_104_B_Final_Exam_Review

Chemistry_104_B_Final_Exam_Review - 1 Chemistry 104 B Final...

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1 Chemistry 104 B Final Exam Review Safety 1. What must you wear at all times while in the lab? (Clothing, protective gear, etc) Must wear 2. Where are the safety showers and eyewash stations located? 3. Where is the first aid kit and fire extinguisher located? 4. If you spill a chemical on yourself whether it is on your hands, on your clothes or in your eyes, what do you do and for how long do you do it? Laboratory Techniques 1. If you have four types of glassware, a 100 mL volumetric flask, a 10 mL volumetric pipet, a 10 mL graduated pipet, and a 1 mL volumetric pipet, how do you make a 1 to 10 dilution from the stock solution. 2. What is a serial dilution? 3. What is a parallel dilution? 4. Where is the filtered product from the Indigo Lab disposed? 5. Where do you dispose of “plastic” transfer pipets that have been contaminated with chemicals? Beer’s Law 1. Write the formula for Beer’s Law and define each of the variables? 2. How does the molar absorptivity depend upon the concentration (mol/L) of the dissolved solute? a. It increases in a linear fashion as concentration increases. b. It decreases in a linear fashion as concentration increases. c. It is independent of concentration d. It increases in an exponential fashion as concentration increases. e. None of the above 3. The stock solution of Allura Red provided by the prep room is 4.0 x 10 -3 M. A solution that produces an absorbance at the wavelength of maximal absorbance has a concentration of 4.0 x 10 -5 . To prepare a solution having an absorbance of 1.0 at the
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Chemistry_104_B_Final_Exam_Review - 1 Chemistry 104 B Final...

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