Quiz 2 Material (Conversions/Dimensional Analysis)

Question 1

Accuracy vs precision

Answer 1

Accuracy is closeness to the actual target
Precision is the ability to consistently place near that target

Question 2

How many pounds are in one kilogram?

Answer 2

2.21

Question 3

Convert 130 lbs to kg

Answer 3

59 kg

Question 4

Convert 63.5 in to ft

Answer 4

5.29 ft

Question 5

How many pounds are in a ton

Answer 5

2000

Question 6

Convert 1275 pounds to tonnes and grams

Answer 6

.6375 tonnes
5.783 x 10^5 g

Question 7

Convert 10.07 quarts into liters

Answer 7

9.527 liters

Question 8

Convert 2.43 micrograms into grams

Answer 8

2.43 x 10^-6 grams

Question 9

Formula for density

Answer 9

Mass divided by volume

Question 10

How do we convert volume (mL) to mass (g)?

Answer 10

Multiply mL x g/mL to get g

Question 11

How do we convert mass (g) to volume (mL)?

Answer 11

Multiply g x mL/g to get mL

Question 12

Find the density of 48.0 g of metal if the level of water in a cylinder rises from 25 to 33 mL after the metal is added

Answer 12

The density is 6.0 g/cm^3

Question 13

If the density of acetic acid is 1.05 g/mL,what is the volume of 5 grams of acetic acid?

Answer 13

4.8 mL

Question 14

If olive oil has a density of 0.92 g/mL, how many liters of olive oil are in 285 g of olive oil?

Answer 14

0.31 L

Question 15

How many liters of gasoline contain 2.2 kg of gasoline (density of gasoline is 0.66 g/mL)

Question 16

A group of students collected 125 empty aluminum cans to take to the recycling center. If 21 cans contain 1.0 lb of aluminum, how many liters of aluminum (D = 2.70 g/cm3) are obtained from the cans?
Hints: 454 g = 1 lb 1cm3 = 1 mL

Question 17

Temperature is

Answer 17

A measure of the average kinetic energy of particles in a sample

Question 18

Hot particles move ____ than cold particles

Answer 18

Faster

Question 19

Conversion for Celsius to Fahrenheit

Answer 19

tF =(1.8xtC)+32

Question 20

Conversion for Fahrenheit to Celsius

Answer 20

tC = (tF – 32)/1.8

Question 21

Conversion for Celsius to Kelvin

Answer 21

tK = tC + 273.15

Question 22

A person with hypothermia has a body temperature of 34.8 °C. What Is that temperature in °F?

Answer 22

94.64° F

Question 23

Convert 211°C to Kelvin

Answer 23

484.15°K

Question 24

Convert 35.8°K to Celsius

Answer 24

-237.35

Question 25

Convert 77.4°K to Fahrenheit

Answer 25

-320.35°F

Question 26

A person loses 2.70lb in two weeks. How many grams did they lose?

Answer 26

1220 g

Question 27

A city block is 0.161 km long. How many cm is this?

Answer 27

16100 cm

Question 28

A bench press bar has a mass of 20.4 kg. How many lb is this?

Answer 28

44.9 lb

Question 29

Convert 3.2 ft^2 to square inches.

Answer 29

460 square inches

Question 30

Convert 2.30 hours to seconds

Answer 30

8280 seconds

Question 31

How many cm in one inch?

Answer 31

2.54

Question 32

How many grams are in one pound?

Answer 32

453.592g