LS8_a - Units 1 and 2 How do we perform chemical analysis?...

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Chemistry XXI Units 1 and 2 How do we perform chemical analysis? Midterm Evaluation
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Chemistry XXI Lab Session 8 What have you learned?
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Chemistry XXI WRITTEN TEST There is not enough room to answer the questions on the test paper. Please answer on separate sheets making sure you identify where each problem is answered. For numerical answers, put a box around the answer. You have one hour. Let’s Start
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Chemistry XXI Your Challenge Imagine that you work for a cosmetic industry interested in developing new sunscreens. Your task is to try to find the relationship between the SPF rating of commercial sunscreens and their actual absorption of UV light. How would you solve this problem?
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Chemistry XXI Sunscreens Two types: Organic Transform UV into IR radiation Inorganic Made of substances that scatter/reflect UV
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Chemistry XXI Sun Protection Factor The SPF rating is calculated by comparing the amount of time needed to produce a sunburn on protected skin to the amount of time needed to cause a sunburn on unprotected skin
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This note was uploaded on 04/09/2009 for the course CHEM 151 taught by Professor Staff during the Fall '08 term at Arizona.

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LS8_a - Units 1 and 2 How do we perform chemical analysis?...

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