Answer:
4. 204.00 g
5. 0.23 g/cm³
6. 578.93 g
7. 9.21 g/mL
Explanation:
I answered 1-3 on the first question you posted.
If you are using the formula, d = mv, you can simply plug in the values into the correct spot. d is density, m is mass, and v is volume.
4. Density is 13.6 g/mL. Volume is 15.0 mL. Mass is unknown.
d = m/v
13.6 = m/(15.0)
13.6 × 15.0 = (m/(15.0)) × (15.0)
204 = m
m = 204.00 g
5. For this problem, you are given a side length instead of a volume. You can find volume using this side length. The side length is 3.86 cm.
V = s³
V = (3.86 cm)³
V = 57.512 cm³
V = 57.51 cm³
Now, you have volume which is 57.5 cm³. Mass is 13.4 g. Find density.
d = m/v
d = (13.4 g)/(57.5 cm³)
d = 0.23 g/cm³
6. You have side lengths of 15.5 cm, 10.0 cm, and 4.5 cm. Find volume.
V = lwh
V = (15.5 cm)(10.0 cm)(4.5 cm)
V = 697.5 cm³
Volume is 697.5 cm³. Density is 0.830 g/cm³. Find mass.
d = m/v
0.830 g/cm³ = m/(697.5 cm³)
(0.830 g/cm³) × (697.5 cm³) = m/(697.5 cm³) × (697.5 cm³)
578.93 g = m
m = 578.93 g
7. The difference in volume measured in the graduated cylinder is the volume for the object.
27.3 mL - 22.5 mL = 2.8 mL
Volume is 2.8 mL. Mass is 25.8 g. Fine density.
d = m/v
d = (25.8 g)/(2.8 mL)
d = 9.21 g/mL
