Significant Figure and Etc. Lab Worksheet Chapter 1 discusses significant figures, dimensional analysis, and other basic topics fa calculations used in chemistry problems. If you have any trouble with the problems in this worksheet, check out Chapter 1 for some help. 1) How many significant figures are in each of the following values? a. 125 mL 3 b. 1,500 g 4 0.0055 L 2 c. d. 1060. ergs e. 1.587 x 107 m/s f. 5.41 x 10-20 moles