density
DESCRIPTION
Density. M V. M. D =. D. V. Derived Units. Volume = length width height Density = mass per uni t volume (g/cm 3 or g/ml). M. D. V. Density. An object has a volume of 825 cm 3 and a density of 13.6 g/cm 3 . Find its mass. GIVEN: V = 825 cm 3 D = 13.6 g/cm 3 M = ?. - PowerPoint PPT PresentationTRANSCRIPT
Density
Derived UnitsVolume = length width height
Density = mass per unit volume (g/cm3 or g/ml)
D =
MV D
MV
DensityAn object has a volume of 825 cm3 and a
density of 13.6 g/cm3. Find its mass.
GIVEN:
V = 825 cm3
D = 13.6 g/cm3
M = ?
WORK:M = DV
M = (13.6 g/cm3)(825cm3)
M = 11,220 g
DM
V
A liquid has a density of 0.87 g/mL. What volume is occupied by 25 g of the liquid?
GIVEN:
D = 0.87 g/mLV = ?M = 25 g
DM
V
WORK:V = M D
V = 25 g
0.87 g/mL
V = 28.7 mL
Density (cont’d)
Density (ugh… enough already)
You have a sample with a mass of 620 g and a volume of 753 cm3. Find its
density.GIVEN:
M = 620 gV = 753 cm3
D = ?
DM
V
WORK:D = M V
D = 620 g
753 cm3
D = 0.82 g/cm3
A gold-colored ring has a mass of 18.9 grams and a
volume of 1.12 mL.
Is the ring pure gold? (The density of gold is 19.3 g/mL.)
What volume would a 0.871 gram sample of air occupy if
the density of airis 1.29 g/L?
A cup of sugar has a volume of 237 mL. What is the mass of the cup of sugar if the density is 1.59
g/mL?