Prbset03

Prbset03 - CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO.:...

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CHEMICAL ENGINEERING THERMODYNAMICS COURSE NO.: CHEG301 STUDENT: ___________________ COURSE: Thermodynamics INSTRUCTOR: Prof. Anderson SUBJECT: Problem Set 03 DUE: Wednesday, Sept. 12, 2007 1. A 10-liter gas cylinder containing nitrogen gas initially at a pressure of 200 atm and 250K is connected to another cylinder 5 liters in volume, which is initially evacuated. A valve between the two cylinders is opened until the pressures in the cylinders equalize. At that point, find the final temperature and pressure in each cylinder if there is no heat flow into or out of the cylinders. You may assume that there is not heat transfer between the gas and cylinder walls, and that the gas is ideal with a constant-pressure heat capacity of 7 cal/gmol- K. 2. On campus we have liquid carbon dioxide stored in a 7000 gallon tank. To maintain the CO 2 as a liquid, a pressure of 654 psia is maintained in the tank. Unfortunately, the tank is not well insulated and considerable CO 2 boils off and is vented. One of our undergraduates
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