# Quiz 2: Measurement

Chemistry

Q 1Q 1

Which equation is equal to 0.00539?
A) 5.39 × 10

^{3}B) 5.39 × 10^{2}C) 5.39 × 10^{-}^{3}D) 5.39 × 10^{-}^{2}Free

Multiple Choice

C

Q 2Q 2

Which equation is equal to 623?
A) 6.23 × 10

^{3}B) 6.23 × 10^{2}C) 6.23 × 10^{-}^{3}D) 6.23 × 10^{-}^{2}Free

Multiple Choice

B

Q 3Q 3

In the SI system of measurement, the unit of mass is the:
A) kilogram.
B) meter.
C) liter.
D) yard.

Free

Multiple Choice

A

Q 4Q 4

The distribution of hits on the bull's-eye is described as:
A) both accurate and precise.
B) neither accurate nor precise.
C) accurate but not precise.
D) precise but not accurate.

Free

Multiple Choice

Q 5Q 5

A student measures the volume of a solution to be 0.03010 L. How many significant digits are in this measurement?
A) two
B) three
C) four
D) five

Free

Multiple Choice

Q 6Q 6

A student measures the volume of a solution to be 0.00370 L. How many significant digits are in this measurement?
A) two
B) three
C) four
D) five

Free

Multiple Choice

Q 7Q 7

A solution has a mass of 15.03 grams and a volume of 14.4 mL. What is the density of this solution, reported to the correct number of significant digits?
A) 1.04 g/mL
B) 1.044 g/mL
C) 0.958 g/mL
D) 0.9581 g/mL

Free

Multiple Choice

Q 8Q 8

A sample of metal has a mass of 0.0049 grams. What is this mass in milligrams?
A) 0.0000049 mg
B) 4.9 mg
C) 490 mg
D) 4.9 × 10

^{12}mgFree

Multiple Choice

Q 9Q 9

A sample of metal has a mass of 0.0793 kilograms. What is this mass in grams?
A) 0.00000793 g
B) 793 g
C) 79.3 g
D) 7.93 × 10

^{12}gFree

Multiple Choice

Free

Multiple Choice

Free

Multiple Choice

Q 12Q 12

A candle made of a certain wax blend burns at a rate of 34.0 mg/min. What is the value of this burn rate if expressed in grams/hour?
A) 2.04 g/hr
B) 567 g/hr
C) 1,764 g/hr
D) 2,040 g/hr

Free

Multiple Choice

Q 13Q 13

A car is moving at 60.0 mi/hr. How many feet/second is the driver traveling? (1 mile = 5,280 feet)
A) 8.80 ft/sec
B) 88.0 ft/sec
C) 880 ft/sec
D) 95.2 ft/sec

Free

Multiple Choice

Q 14Q 14

The density of bromine is 3.12 g/mL. What is the mass of 155 mL of bromine?
A) 0.0201 g
B) 38.2 g
C) 49.7 g
D) 484 g

Free

Multiple Choice

Q 15Q 15

A piece of driftwood has a density of 0.76 g/cm

^{3}, while a piece of alloy has a density of 6.7 g/cm^{3}. Which statement is accurate? A) Both the driftwood and the alloy will float on pure water. B) Neither the driftwood nor the alloy will float on pure water. C) The driftwood will sink when placed on pure water, but the alloy will float. D) The driftwood will float on pure water, but the alloy will sink.Free

Multiple Choice

Q 16Q 16

A block of titanium metal has a mass of 104.3 g. Given titanium's density (4.51 g/cm

^{3}), what volume does this block of titanium occupy in liters? A) 23.2 L B) 0.0231 L C) 232 L D) 0.00231 LFree

Multiple Choice

Q 17Q 17

A block of titanium metal has a mass of 1.22 kg. Given titanium's density (7.87 g/cm

^{3}), what volume does this block of titanium occupy in liters? A) 0.155 L B) 155 L C) 1.55 L D) 1.55 × 10^{-}^{4}LFree

Multiple Choice

Q 18Q 18

Unknown sample #1 has a mass of 0.500 g and a volume of 0.750 mL. Unknown sample #2 has a mass of 12.1 g and a volume of 452 mL. Which statement is accurate concerning the two samples?
A) Unknown sample #1 has a density of 1.50 g/cm

^{3}. B) Unknown sample #2 has a density of 37.4 g/cm^{3}. C) Unknown sample #1 has the greater density-0.667 g/cm^{3}D) Unknown sample #2 has the greater density-0.0268 g/cm^{3}Free

Multiple Choice

Q 19Q 19

A 100.0-mL sample of lead has a much greater mass than a 100.0-mL sample of quartz. Select the accurate statement.
A) The lead sample also has the greater density.
B) The quartz sample has the greater density.
C) Both the lead sample and the quartz sample have the same density.
D) There is not enough information to determine which sample has the greater density.

Free

Multiple Choice

Q 20Q 20

Which element will float on pure water?
A) iron (density = 7.87 g/cm

^{3}) B) copper (density = 8.96 g/cm^{3}) C) gold (density = 19.31 g/cm^{3}) D) None of these elements will float on pure water.Free

Multiple Choice

Q 21Q 21

A solution has a mass of 17.41 grams and a volume of 14.4 mL. What is the density of this solution, reported to the correct number of significant digits?
A) 1.21 g/mL
B) 0.827 g/mL
C) 250.7 g/mL
D) 1.209 g/mL

Free

Multiple Choice

Q 22Q 22

On the Celsius temperature scale, the boiling point of water is
A) 0 °C
B) 32 °C
C) 100 °C
D) 212 °C

Free

Multiple Choice

Q 23Q 23

Select the temperature scale that scientists use for very low temperatures as well as to predict the way gases behave.
A) Celsius
B) Fahrenheit
C) Kelvin
D) All of these temperature scales are used for these purposes.

Free

Multiple Choice

Q 24Q 24

Select the temperature scale that MOST of the world uses.
A) Celsius
B) Fahrenheit
C) Kelvin
D) All of these temperature scales are used equally around the world.

Free

Multiple Choice

Q 25Q 25

Normal average normal body temperature is 98.6 °F. Three children have their temperature taken at a doctor's office. The first child has a temperature of 310 K. The second child has a body temperature of 98.5 °F. The third child has a body temperature of 38.3 °C. Which child is running a fever (has a temperature greater than 100 °F)?
A) the first child
B) the second child
C) the third child
D) All of the children are running a fever.

Free

Multiple Choice