## Chemistry 9th Edition

To find the total volume using correct significant figures: Graduated cylinder 1 shows $\approx 2.9$ mL Graduated cylinder 2 shows $\approx 0.28$ mL The lowest number of significant figures between both numbers is 2. Therefore the sum of the two numbers should be written as 2 significant figures when the volumes are added to the beaker. $2.9$ mL + $0.28$ mL $\approx 3.2$ mL