A cloud is observed to commence formation at a temperature of -61° C and continues to cool lue to emission of infrared radiation. 1) Determine the partial pressure (Pa) and density of water vapour (mg/m³) in the air before loud formation commenced. ) Determine the partial pressure (Pa) and density of water vapour (mg/m³) in the cloud when the emperature is -63° C. ) Calculate the ice water content (mg/m³) in the cloud when the temperature is -63º C.
A cloud is observed to commence formation at a temperature of -61° C and continues to cool lue to emission of infrared radiation. 1) Determine the partial pressure (Pa) and density of water vapour (mg/m³) in the air before loud formation commenced. ) Determine the partial pressure (Pa) and density of water vapour (mg/m³) in the cloud when the emperature is -63° C. ) Calculate the ice water content (mg/m³) in the cloud when the temperature is -63º C.
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Transcribed Image Text:A cloud is observed to commence formation at a temperature of-61° C and continues to cool
due to emission of infrared radiation.
a) Determine the partial pressure (Pa) and density of water vapour (mg/m³) in the air before
cloud formation commenced.
b) Determine the partial pressure (Pa) and density of water vapour (mg/m³) in the cloud when the
temperature is -63° C.
c) Calculate the ice water content (mg/m³) in the cloud when the temperature is −63° C.
Use Table 1.
Table 1. Saturated water vapour pressure and density.
Temperature (°C)
Saturated Water Vapour
Pressure (Pa)
-60
-61
-62
-63
-64
-65
1.100
0.9612
0.8382
0.7300
0.6349
0.5515
Saturated Water Vapour
Density (mg/m³)
11.192
9.819
8.603
7.528
6.579
5.742
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