Calculate the density of the following materials for which the mass and volume of samples have been measured. Express the density of liquids in g / mL , the density of solids in g / cm 3 , and the density of gases in g / L . a . A 50 .0-mL sample of liquid acetone has a mass of 39.6 g . b . A 1 .00-cup ( 236-mL ) sample of homogenized milk has a mass of 243 g . c. 20.0 L of dry carbon dioxide gas ( CO 2 ) has a mass of 39.54 g . d . A 25 .0-cm 3 block of nickel metal ( Ni ) has a mass of 222.5 g .
Calculate the density of the following materials for which the mass and volume of samples have been measured. Express the density of liquids in g / mL , the density of solids in g / cm 3 , and the density of gases in g / L . a . A 50 .0-mL sample of liquid acetone has a mass of 39.6 g . b . A 1 .00-cup ( 236-mL ) sample of homogenized milk has a mass of 243 g . c. 20.0 L of dry carbon dioxide gas ( CO 2 ) has a mass of 39.54 g . d . A 25 .0-cm 3 block of nickel metal ( Ni ) has a mass of 222.5 g .
Solution Summary: The author explains that the density of a substance is defined as the ratio of its mass to the volume.
Calculate the density of the following materials for which the mass and volume of samples have been measured. Express the density of liquids in
g
/
mL
, the density of solids in
g
/
cm
3
, and the density of gases in
g
/
L
.
a. A
50
.0-mL
sample of liquid acetone has a mass of
39.6
g
.
b. A
1
.00-cup
(
236-mL
)
sample of homogenized milk has a mass of
243
g
.
c.
20.0
L
of dry carbon dioxide gas
(
CO
2
)
has a mass of
39.54
g
.
d. A
25
.0-cm
3
block of nickel metal
(
Ni
)
has a mass of
222.5
g
.
6. Calculate the density in g/mL of 0.56 L of solution weighing 190 grams.
7. What volume (in cm3) of silver metal will weigh exactly 2500.0 g? The density of silver is 10.5g/cm3.
16. A mixture is made by adding 20.42 g of substance A, 1.322
g of substance B, and 83.1 g of substance C. Calculate the
total mass of the mixture with the proper number of
significant figures.
17. The average speed of a nitrogen molecule in air at 25 °C is
515 m/s. Convert this speed to miles per hour.
34. Convert 4.58 x 10³ cm³ to each
unit.
a. L
b. mL
c. gal
d. qt
The m in the equation for density is
in italic type, meaning that it stands
for mass rather than for meters. In
general, the symbols for units such
as meters (m), seconds (s), or
kelvins (K) appear in regular type,
while those for variables such as
mass (m), volume (V), and time (t)
appear in italics.
Chapter 1 Solutions
Chemistry for Today: General, Organic, and Biochemistry
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