Midterm Study Questions

Midterm Study Questions - Exam Study Questions Chemistry...

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Exam Study Questions Chemistry 20L Winter 2007 During the exam you will be allowed to use a calculator, your lab notebook, your lecture guides and any hand-written materials that you want. Printed study questions and/or answers, and the lab manual are not allowed. Review all pre-lab study questions even if they were not assigned. You should be able to answer all these questions now as well as the sidebar questions within the experiments. Review the experimental procedures Review the concepts in the CPR assignment. Error Analysis 1. Calculate the percent error for the following quantities (a) (20.54 ± 0.02)(0.254 ± 0.003) 3.21 ± 0.05 (b) (30.078 ± 0.003) - (20.174 ± 0.001) + (9.813 ± 005) (c) [(0.642 ± 0.002) (2.413 ± 0.004)] - (0.501 ± 0.002) (d) 12.635 ± 0.005 (5.967 ± 0.003) + (0.478 ± 0.004) 2. Calculate the absolute errors for the quantities in question 1. 3. Calculate the percent relative average deviation for the following set of data: 20.96, 20.85, 20.89, 20.92 Concentrations 4. Define the concentration terms molarity, normality, weight percent (w/w and w/v), PPM, pH. 5. When would it be appropriate to use each of the concentrations in question 4. What limitations are there with any of these concentrations? 6.
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Midterm Study Questions - Exam Study Questions Chemistry...

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