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Unformatted text preview: burgin (lcb626) Pre-lab 7 anderson (53245) 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 2) 1.0 points Which part of the complex iron compound will be analyzed in this experiment? 1. water content 2. potassium content 3. iron content 4. oxalate content 002 (part 2 of 2) 1.0 points Which of the following is a good reason to use the visible spectrophotometry technique for this analysis? 1. Once the sample is prepared, accurate ab- sorbance measurements can be made quickly and with good precision using inexpensive equipment. 2. It is one of the most commonly used meth- ods of quantitative analysis in both chemistry and biochemistry. 3. Absorbance is directly proportional to the concentration of the light-absorbing species in a sample. 4. All of these reasons are correct. 003 2.0 points Which of the following best describes the con- cept of complementary colors? 1. Each wavelength of light has a corre- sponding frequency, and light with that fre- quency will be the complementary color of the original wavelength.original wavelength....
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- Spring '08