3.3. Uncertainty in Measurements http://www.ck12.org
- Report the length measurement of the pink bar to the correct number of significant figures. Which digits in
your measurement are certain? Which are uncertain? - How many significant figures are in each of the following measurements?
a. 9 potatoes
b. 4.05 cm
c. 0.0061 kg
d. 50 mL
e. 8.00× 109 μg
f. 720.00 s - Round the measured quantity of 31.0753 g to each of the following amounts of significant figures.
a. five
b. four
c. three
d. two
e. one
Problems
- Kyle measures the mass of a solid sample to be 8.09 g. The accepted value for the mass is 8.42 g. Calculate
Kyle’s percent error.