Sig figs
Error
Uncertainties
Propagating Uncertainties
Sig Fig Calculations
100
How many sig figs in 545?
3
100
High error in this category means large fluctuations in recordings.
random
100
If a graduated cylinder is marked every 1mL, what is the uncertainty?
+/- 0.5
100
The final measurement in absolute uncertainty 4.57 g +/- 3%
What is 4.57 +/- 0.1 g?
100
6.201 cm + 7.4 cm + 0.68 cm + 12.0 cm to the correct number of sig figs.
What is 26.3?
200
How many sig figs are in 505
3
200
This type of error goes toward procedure.
Systematic
200
A digital balance reads 5.004. What is the uncertainty?
+/- 0.001
200
(45.6 +/- 0.5 mL) + (24.8 +/- 0.5 mL)
What is 70.4 +/- 1.0?
200
8.264 g – 7.8 g to the correct number of sig figs.
What is 0.5?
300
How many sig figs are in 0.0054
2
300
Which type of error is reduced from multiple trials?
Random
300
What is the final uncertainy in 1.0 +/- 0.1 + 1.0 +/- 0.1
.2
300
The density of a rock that has a mass of 26.7 +/- 0.1 g and a volume of 13.6 +/- 0.5 mL.
What is 1.96 +/- 0.08?
300
(131 cm)(2.3 cm) to the correct number of sig figs.
What is 310?
400
How many sig figs are in the answer of 5.4 x 0.0007?
1
400
4.5, 4.6, 4.7, 4.8 with a target value of 1.0 is what type of error?
systematic
400
What is the total % uncertainty in 1 +/- 0.5 and 2 +/-0.5
75 %
400
Using a burette for a titration, the volume of the acid in the burette fell from 30.00 mL to 18.00 mL. The total volume of acid used including propagated uncertainties was this.
What is 12.00 +/- 0.1 mL?
400
20.2 cm / 7.41 cm to the correct number of sig figs.
What is 2.73?
500
How many sig figs are in the answer for 50.0 + 40.
2
500
The equation for percent error.
What is 
500
True or false: when subtracting measurements, you subtract the uncertainties.
False
500
Before burning a piece of Magnesium ribbon the mass was recorded as 0.250 g on a digital scale. After the ribbon was burned the mass on a digital scale was recorded as 0.015. The mass loss with uncertainties was this.
What is 0.235 +/- 0.002 g
500
40.002 ml / 13.000005 ml to the correct number of sig figs.
What is 3.0771?