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- 1. Multiple ChoiceWhich of the following numbers has three significant figures?16.070.01401.0707,203.00
- 2. Multiple ChoiceUsing significant figures, what is the proper solution to the following equation?
(150 + 2.5 + 36.75) ÷ (6.60 + 0.173) =
30
28
27.9
27.94
- 3. Multiple ChoiceYou have a reported 1 pound bar of gold. Every time you determine its mass on a balance, the balance reads a mass of 937.00g. (1 lb = 453.6 g)
This is an example ofPrecision ONLYAccuracy ONLYBOTH Precision AND AccuracyNEITHER Precision NOR Accuracy - 4. Multiple ChoiceA student calculates the density of iron as 6.8g/cm3 using lab data for mass and volume. A handbook reveals that the correct value is 7.86g/cm3. What is the percent error to correct significant figures?
The percent error formula is on your formula chart, but it's a good idea to memorize it:)13%13.5%-16%15.6% - 5. Multiple ChoiceThe number 2.0×1015 isgreater than one
less than one
smaller than 2.0 × 10−15equal to 2.0 × 10−15 - 6. Multiple ChoiceHow many grams of tomatoes are equivalent to 2.09 pounds of tomatoes? (1 lb = 453.6 g) Answer using correct number of significant figures.948.0 g948 g217.0 g217 g
- 7. Multiple Choice
Ponder the epic statements of equality below:
1 quaffle = 120 winkles
1 twirrel = 52 kerpinkles
24 kerpinkles = 97 quaffles
Which dimensional analysis shown correctly indicates the number of twirrels in 240 winkles?ABCD - 8. Multiple Choice
Which dimensional analysis shown correctly indicates the number of nanoliters in 72 kiloliters?
A
B
C
D
- 9. Multiple ChoiceFor the conversion of 0.073 gallons to milliliters, the conversion factors are:
4 quarts = 1 gallon
1.057 quarts = 1 liter
1×10−3 liters = 1 milliliter
The correctly expressed answer is3.1 x 102 mL3.09 x 102 mL2.76 × 102 mL2.8 × 102 mL - 10. Multiple ChoiceWhich piece of lab equipment shown could be used to most precisely measure the volume of a liquid?BeakerGraduated CylinderBuretAll three would make equally precise measurements
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