Chem-3000-Prelabs-Fall-2009-Prelab-1

Chem-3000-Prelabs-Fall-2009-Prelab-1 - PRE-LABORATORY...

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PRE-LABORATORY EXERCISES 2 Experiment 1 Prelab Last ________________________________ First _____________________ Email: ___________________@ cornell.edu [ ] Christina Cowman [ ] Yingchao (Alex) Yu [ ] Angela Bruneau [ ] Mon PM [ ] Tues AM [ ] Tues PM [ ] Weds PM [ ] Thurs PM 1. The following masses were recorded for 12 different U.S. quarters (all given in grams): 1 5.693 5.575 5.641 5.624 5.703 5.621 5.616 5.777 5.571 5.585 5.626 5.673 Calculate the mean and standard deviation for these data. Report your answer to the proper number of significant figures and with the proper units. a) mean = ____________________ b) standard deviation = ____________________ 2. Shown in the following rows are the results for the determination of acetaminophen (in milligrams) in
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