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100
How many significant figures are in 0.0020
2, lead zeros are never significant.
100
Perform the following operation and express you answer in the correct amount of significant figures. (Be sure to round properly) 37.2 x 11.23
=417.
100
Perform the following operation and express you answer in the correct amount of significant figures. (Be sure to round properly) 8.0 x 3.65
= 29
100
How many significant figures are in the following number? 0300100
4 sf
100
Perform the following operation and express you answer in the correct amount of significant figures. (Be sure to round properly) 33.67 / 2.3
=15
200
The true mass of a book is 4.3 kg. Trial 1 - 3.2 kg Trial 2 - 5.7 kg Trial 3 -4.0 kg Am I being accurate, precise, neither or both?
Accurate, not precise.
200
The true length of a rod is 33.4 cm. Trial 1 - 33.0 cm Trial 2 - 34.0 cm Trial 3 -33.5 cm Am I being accurate, precise, neither or both?
Both.
200
The true volume of an object is 12.0 mL. Trial 1 - 10.0 kg Trial 2 - 10.2 kg Trial 3 -10.4 kg Am I being accurate, precise, neither or both?
Precise, not accurate.
200
The true mass of an object is 8.2 g. Trial 1 - 7.2 g Trial 2 - 8.7 g Trial 3 -15.0 g Am I being accurate, precise, neither or both?
Neither.
200
Give an example of a quantitative and qualitative observation of the classroom.
Quantitative has a number. Qualitative is just an observation.
300
Ms. H ran an experiment to ideally yield 8.2 grams of copper solid. In her 3 trials she instead yielded 6.5 grams, 9.3 grams, and 8.0 grams. What was the mean mass of her experiment? What was her percent error?
Mean is 7.9 (experimental) True is 8.2 grams. Percent Error is 3.7%
300
Convert the following metric system measurements. 0.05 km = _______cm
500 cm
300
Ms. H ran an experiment to ideally yield 7.6 grams of copper solid. In her 3 trials she instead yielded 5.5 grams, 8.3 grams, and 7.0 grams. What was the mean mass of her experiment? What was her percent error?
Mean is 6.9 (experimental) True is 7.6 grams. Percent Error is 9.2%
300
Convert the following metric system measurements. Express your answer in scientific notation. 3.2 HL = _______mL
320,000 3.2x10^5
300
Ms. H ran an experiment to ideally yield 9.4 grams of copper solid. In her 3 trials she instead yielded 10.5 grams, 8.3 grams, and 9.6 grams. What was the mean mass of her experiment? What was her percent error?
Mean is 9.5 (experimental) True is 9.4 grams. Percent Error is 1.1%
400
Expand the following scientific notation. 3.4x10^6
3,400,000
400
Convert the following metric system measurements. 2.0x10^-2 km = _______mm
2.0x10^-2 km = 0.02 km 0.02 km = 20,000mm
400
Put the following number into scientific notation with 2 significant figures. 360,200
3.65x10^5
400
Convert the following metric system measurements. 3.2x10^4 mL = _______L
3.2x10^4 mL = 32,000 mL 32,000 mL = 32L
400
Expand the following scientific notation. 7.9x10^-5
0.000079
500
The mass of a metal is 19.0 g/mL. What is the density of that metal that displaces 8.0 mL of water? (do not forget units)
m=19. g
500
If a piece of metal has a mass of 3.5 g and displaces a volume of 4.2mL of water, what is the density of the metal?
d=0.83 g/mL
500
A student measured a copper cube to be exactly 2.0 cm per side. a) What is the volume of the cube? b) The mass of the cube is 90.0 g. What is the density of the copper cube?
a) Volume = l x w x h =2.0 x 2.0 x 2.0 = 8.0 cm3 b) d=m/v =90.0/8.00 =11. g/cm3
500
The density of a metal is 4.4 g/mL. What is the volume of that metal that has a mass of 5.0 g of water? (do not forget units)
v=1.1 mL
500
If a piece of metal has a mass of 4.5 g and displaces a volume of 2.2mL of water, what is the density of the metal?
d=2.0 g/mL