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Chapter 0: The Analytical Process (Example)

Chapter 0: The Analytical Process (Example). 1. Formulating the Question. 2. Selecting Analytical Procedures. 3. Sampling. Random Heterogeneous Material. Segregated Heterogeneous Material. 4. Sample Preparation. 5. Analysis. 6. Reporting and Interpretation. 7. Drawing Conclusions.

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Chapter 0: The Analytical Process (Example)

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  1. Chapter 0:The Analytical Process (Example)

  2. 1. Formulating the Question 2. Selecting Analytical Procedures

  3. 3. Sampling

  4. Random Heterogeneous Material

  5. Segregated Heterogeneous Material

  6. 4. Sample Preparation

  7. 5. Analysis

  8. 6. Reporting and Interpretation 7. Drawing Conclusions

  9. representative sampling – random vs. segregated sample preparation extraction, centrifugation, filtering chromatography, stationary phase, adsorption aliquot calibration curve Terminology to Know From the Example

  10. Chapter 2: Tools of the Trade

  11. Mechanical Balance

  12. Electronic Balance

  13. Buoyancy correction - a sample appears lighter than its actual mass by an amount equal to the mass of the air it displaces. Example: Find the true mass of water (density = 1.00 g/mL) if the apparent mass is 100.00g

  14. Calibration of Volumetric Glassware True volume = mass H2O x correction factor Example p. 49: an empty weighing bottle had a mass of 10.283 g. After water was added from a 25-mL pipet, the mass was 35.225 g. The temperature was 23oC. Find the volume of water delivered by the pipet.

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