Ebbing, "General Chemistry," 5th ed., pp. 18-22 (measurement, significant
figures, and rounding), pp. 26-29 (volume and density).
Learning Center File: answers to Pre- and
Post-lab questions; Experiment
1 completed as an example for students to follow.
FOR ALL PROBLEMS
TECHNIQUES FOR MEASURING LIQUIDS AND USE OF THE BALANCE (number
7. View Techniques
on the left).
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
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.)
the volume contained in each piece of glassware listed below. Carefully
consider the number of decimal places to record for each piece
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