14. A cloud bank moving across the ocean at an altitude of 2000 m encounters a...

 

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14. A cloud bank moving across the ocean at an altitude of 2000 m encounters a coastal mountain range. As it rises to a height of 3500 m to pass over the mountains, it undergoes an adiabatic expansion. (Air is a poor heat conductor.) The pressure at 2000 and 3500 m is 0.802 atm and 0.602 atm, respectively. If the initial temperature of the cloud is 288 K, what is the cloud temperature as it passes over the mountains? (Do you expect rain or snow?) Assume C₂ = 28.86 J K-¹ mol-¹ for air. Clearly state your assumptions. 14. A cloud bank moving across the ocean at an altitude of 2000 m encounters a coastal mountain range. As it rises to a height of 3500 m to pass over the mountains, it undergoes an adiabatic expansion. (Air is a poor heat conductor.) The pressure at 2000 and 3500 m is 0.802 atm and 0.602 atm, respectively. If the initial temperature of the cloud is 288 K, what is the cloud temperature as it passes over the mountains? (Do you expect rain or snow?) Assume C₂ = 28.86 J K-¹ mol-¹ for air. Clearly state your assumptions.