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SignificantFiguresProblemSet.docx

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Significant Figures Problem Set

Chem B11

Name_____________________________________

Lab Period_________________________________

1. How many significant figures are in the following numbers?

6.06 g	1000 cars	85%	1.06 qt/L
25.0 mL	1.05 x 105 m	25 tablets	45 miles/hr
0.000059 m	1001 in	10250. mcg	24 hrs/day
105100 lb	30.8 mg	5.6 x 10-7 g	1000 m/km

2. Scientific Notation. Keep the same number of significant figures.

2.74x10-4	4.06x104	100010000
5.01x106	3.2x10-2	0.000700
1.1x10-3	6x10-6	50.0

3. Calculations: do the following math problems giving the answer with the right number of significant figures. Round your answers in the right way according to sig fig rules.

a. 11.1 + 12.06 + 10 =	g. 25.0 x 10.00 =
b. 12500 + 2330 - 1000 + 10.6 =	h. 66/100.9 =
c. 0.0045 + 0.04602 – 0.0000020 =	i. (15.2 x 23)/26.34 =
d. 4 x 10-3 x 3 x 10-2 x 2 x 10-4 =	j. 6.21 x 1040/(4.678 x 10-50)
e. 8 x 102/(2 x 10-7) = k.
f. 9 x 10-4 x 3 x 107/(1.2 x 106) =

4. What do you see? Read the following measurements with the right number of significant figures. (the scale is in mL)

Image result for graduated cylinder meniscus

Reading:_________________

Image result for ruler measurements cm significant figures

Reading:__________________

Image result for milligram scale weighing picture

Reading:____________________

Bakersfield College Wade Ellis