Lipid Written Signature Assignment v5

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Arizona State University *

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181

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Chemistry

Date

Dec 6, 2023

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docx

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3

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Chemical Thinking Lipid Written Signature Assignment v5.5| 1 Lipid Written Signature Assignment Your name: Your email: Your lab partner’s name(s): Your lab partner’s email(s): Your lab instructor’s name: Your lab section: All work must be very neat and organized . If you need to collect your thoughts, please use a separate sheet of paper. Written Signature Assignments are an individual effort for sections 4 - 8 of the present document (while sections 1 - 3 are a group effort). Please individually submit your completed document to the lab Lipid Written Signature Assignment D2L DropBox folder before the scheduled end of lab. Always check to confirm the correct document/file has imported to the correct lab D2L Dropbox folder – no excuses. Submission to an incorrect Dropbox folder will be subject to a 1-point penalty. If you submit an unintended document, or need to update a submission, you can always resubmit so long as you are not past the deadline . If you submit the wrong document and fail to realize this until after the deadline, a resubmission cannot be accepted. So please be careful and always double check! 1. Overall Project Goal (1 pt) . In complete, well-written sentence(s), summarize in your own words the overall goal(s) for the Lipid Project . 2. Implementing Group Proposal 2: Raw Data, Observations and Results (5 pts). Complete Table 8 , which gathers the supporting raw data for your three (3) replicate assigned snack food runs and the concurrent oil control run. Then finish Table 9 . Table 8. Assigned Snack Food (__________) Replicate Lipid Quantitation Raw Data Assigned Snack Food (Unknown) Mass (finely ground) Volume of Cyclohexane Volume of ___________ Beaker 1 Mass (m beaker 1 ) Unknown Isolate Mass (m 1 ) Vegetable Oil (Control) Mass Volume of Cyclohexane Volume of ___________ Beaker 2 Mass (m beaker 2 ) Control Isolate Mass (m 2 ) Table 9. Assigned Snack Food (__________) Replicate Lipid Quantitation Results and Observations Assigned Snack Food (Unknown) Unknown Isolate Mass (m ULI ) Observations Vegetable Oil (Control) Control Isolate Mass (m CLI ) Observations CHEM 151 LWSA v5.5 3-25-23
Chemical Thinking Lipid Written Signature Assignment v5.5| 2 3. Implementing Group Proposal 2: Starch Test Results (3 pts) . In the space below, clearly report in complete well-written sentences the iodine-potassium iodide (I 2 -KI) test observations and results for the isolated lipids (of Table 8 ) and the positive and negative test controls concurrently run . Parts 4 - 8 (the sections below) are strictly an independent (individual) effort. Sorry, no group work! 4. Assigned Snack Food Isolation Correction Factor (3 pts) . Present in a well-organized manner and in complete detail the isolation correction factor for your assigned snack food based only on Tables 8 and 9 . Clearly state symbolically the equation being used, then substitute in actual values, and finally give the results . 5. Replicate Runs: Assigned Snack Food Percent Fat by Weight (4 pts) . Show the percent fat by weight calculations for your assigned snack food replicate (repeat) runs in a highly organized manner and in complete detail based only on the values from Tables 8 and 9 . Clearly state symbolically, at least once, the equation(s) being used, then present separate calculations for each replicate run . CHEM 151 LWSA v5.5 3-25-23
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