Unit 1 Homework
HW 1.2 DENSITY
Page 8
1. What is the density of an object with a mass of 45 grams and a volume of 5.0 mL?
M
45 g
g
D= =
= 9.0
V 5.0 mL
mL
CIRCLE ONE
Will this object float or sink in water? ( FLOAT / SINK ). How do you know? Sink because density greater than 1
g/mL _____________________________________________________________________________________
2. What is the density of an object that has a mass of 5.0 grams and a volume of 72.3 mL?
D=
M
5.0 g
g
g
=
= 0.0691
= 0.069
V 72.3 mL
mL
mL
0.069 g/mL
M
273 kg
kg
kg
=
= 1.1767
= 1.18
V 232.0 m
m
m
1.18 kg/m3
3. What is the density of an object that has a volume of 232.0 m 3 and a mass of 273 kg?
D=
4. The density of mercury is 13.6 g/mL. How many milliliters are there in 300.0 grams of mercury?
=
→
=
→
=
=
300.0
13.6
= 22.06
22.1 mL
= 22.1
5. A solution of hydrochloric acid has a density of 1.12 g/mL.
a) Calculate the mass of 250 mL of the solution.
=
→
=
→ 1.12
250
280 g
= 280
b) Calculate the volume occupied by 250 grams of the solution.
=
→
=
→
=
=
250.0
1.12
= 223.2
6. The density of uranium is 18.9 g/ cm3. What is the mass of 2.00 cm3 of Uranium?
=
→
=
→ 18.9
2.00
= 37.8
= 220
220 mL
37.8 g
7. The density of uranium is 18.9 g/ cm3. What is the volume of 27 grams of Uranium?
=
→
=
→
=
=
27
18.9
= 1.429
= 1.4
1.4 cm3