Density Worksheet - Unit 1

Name: _____________
Honors Chemistry Unit 1

The density of copper is 8.96 g/cm³. If a rectangular sheet of copper is 10.3 cm wide, 46.1 cm long, and .14 cm thick, what is the mass of the copper?




Chloroform is a liquid with a sticky sweet odor that was once used as a surgical anesthetic. If the density of chloroform is 1.49 g/cm³, what is the volume of 25 g of chloroform?




Perform the following unit conversions. Identify any that are impossible to convert.
a) 75 mm to inches
b) 18.69 m to feet
c) 3 kg to liters
d) 190 pm to centimeters
e) 64.05 mL to seconds
f) 392 mm Hg to atmospheres



Perform the following unit conversions. Identify any that are impossible conversions. Express your answers in scientific notation when necessary.
a) 1.042 x 10^-2 m to mm
b) 5.83 x 105 L to cubic meters
c) 2.56 x 104 Pa to atm
d) 45 km to inches
e) 2.7 hrs. to milliseconds
f) 7.9 x 10³ K to milliamperes







A friend shows you a gift she has received, it is a gold ring! In the laboratory, you find it’s mass to be 58.21 g and its volume to be 3.64 cm³. Calculate the density of the ring. Is it really pure gold? Why or why not?




How many feet are in 86 cm?




How many cubic centimeters are in 2.3 gallons?




How many meters are in 3.5 miles? How many km? How many nm?

Answers:

596 g

16.8 cm³

a. 3.0 in.
b. 61.32 ft.
c. not possible without a density value
d. 1.90 × 10^-8 cm
e. not possible
f. .516 atm

4. a. 10.42 mm
b. 583 cubic meters
c. .253 atm
d. 1.8 x 10⁶ inches
e. 9.72 x 10⁶ milliseconds
f. not possible

d = 16.0 g/cm³, The ring is not pure gold because the actual density of the ring is less than the density of pure gold, 19.3 g/cm³.

2.8 feet

8.7 x 10³ gallons

5.6 x 10³ meters, 5.6 kilometers, 5.6 x 10³ nanometers