Experiment 1
Fundamental Laboratory Techniques

PRELAB QUESTIONS

References:

Text: Ebbing, "General Chemistry," 5th ed., pp. 18-22 (measurement, significant figures, and rounding), pp. 26-29 (volume and density).

Chemistry Learning Center File: answers to Pre- and Post-lab questions; Experiment 1 completed as an example for students to follow.
 
SHOW SET-UP FOR ALL PROBLEMS

REVIEW THE TECHNIQUES FOR MEASURING LIQUIDS  AND USE OF THE BALANCE (number 7. View Techniques on the left).

1. What is the density of a metal bar which has a volume of 4.832 cm³ and a mass of 43.005 g? Report answer using the proper number of significant figures and units.
 
2. What is the volume of 225 g of acetone? The density of acetone is 0.7908 g/mL. Report answer using the proper number of significant figures and units.
 
3. What is the density of water at 22.8 °C? (Use data from Appendix B and the process of interpolation. See Appendix C for example of interpolation.)
 
4. Record the volume contained in each piece of glassware listed below. Carefully consider the number of decimal places to record for each piece of glassware.

5. Perform the following mathematical operations and record the answer with the proper number of significant figures and proper units: (24.163 g - 14.252 g)/ 10.241 mL