The vapor pressure of water at 4 0.0 ° C is 7.34 × 10 3 N/m 2 . Using the ideal gas law , calculate the density of water vapor in g / m 3 that creates a partial pressure equal to this vapor pressure. The result should be the same as the saturation vapor density at that temperature ( 51 . 1 g / m 3 ) .
The vapor pressure of water at 4 0.0 ° C is 7.34 × 10 3 N/m 2 . Using the ideal gas law , calculate the density of water vapor in g / m 3 that creates a partial pressure equal to this vapor pressure. The result should be the same as the saturation vapor density at that temperature ( 51 . 1 g / m 3 ) .
The vapor pressure of water at
4
0.0
°
C
is
7.34
×
10
3
N/m
2
. Using the ideal gas law, calculate the density of water vapor in
g
/
m
3
that creates a partial pressure equal to this vapor pressure. The result should be the same as the saturation vapor density at that temperature
(
51
.
1 g
/
m
3
)
.
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The vapor pressure is the pressure of the vapor phase of a
substance when it is in equilibrium with the solid or liquid phase of the
substance. The relative humidity is the partial pressure of water vapor in the air
divided by the vapor pressure of water at that same temperature, expressed as a
percentage. The air is saturated when the humidity is 100%. (a) The vapor
pressure of water at 20.0°C is 2.34 × 10³ Pa. If the air temperature is 20.0°C and
the relative humidity is 60%, what is the partial pressure of water vapor in the
atmosphere (that is, the pressure due to water vapor alone)?
What is the density of water vapor in the air on a hot, dry day in the desert when the temperature is 40.0 °C and the relative
humidity is 5.00 %? The vapor pressure of water at 40.0 °C is Py = 7.34 x 10° Pa and the molecular mass of water is
M = 18.0 g/mol. Enter your answer in units of grams per cubic meter.
density:
g/m3
The vapor pressure of water at 10 °C is 1300 Pa. (a) What percentage of atmospheric pressure is this? Take atmospheric pressure to be
1.013 x 105 Pa. (b) What percentage of the total air pressure at 10 °C is due to water vapor when the relative humidity is 100%? (c) The
vapor pressure of water at 30 °C is 4300 Pa. What is the relative humidity at this temperature if the partial pressure of water in the air
has not changed from what it was at 10 °C when the relative humidity was 100%?
(a) Percentage = Number i
(b) Percentage = Number ₁
(c) Percentage = Number i
Units
Units
Units
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