446_01c_test1

446_01c_test1 - METR 446 Test # 1 September 18, 2001 Name:...

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METR 446 Test # 1 Name: _______________________ September 18, 2001 1) (15 pts) On the axes below draw and label curves representing equilibrium vapor pressure over a pure water droplet and the equilibrium vapor pressure over two solution drops, one that contains twice as much solute as the other. Also, draw a horizontal line corresponding to 0% supersaturation (100% RH). 2) (10 pts) On the axes below, draw a curve showing how you would expect supersaturation to vary with height inside a cloud. Also explain why this curve looks the way it does by discussing the competing sources and sinks of water vapor in a cloud. Radius e hc /e s Cloud base Cloud top Supersaturation (%) | 0% | Peak supersaturation
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3) (5 pts) In the derivation of Raoult’s Law (effect of solutes on equilibrium vapor pressure), we looked at the influence of a solute on both condensation and evaporation rates. We found that the equilibrium vapor pressure above a solution is different than that over pure water because the solute changes the condensation and / or evaporation rate. Which of these rates does the
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This test prep was uploaded on 04/02/2008 for the course ATMO 446 taught by Professor Brooks during the Spring '07 term at Texas A&M.

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446_01c_test1 - METR 446 Test # 1 September 18, 2001 Name:...

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