Test1Spring05 - 1 PGE 312 - SPRING 2005 Physical and...

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1 PGE 312 - SPRING 2005 Physical and Chemical Behavior of Petroleum Fluids I Test #1, 50 Minutes Closed Book Note: It will be in your best interest to attempt all the questions. Please budget your time accordingly. Problem 1 ( 25 points ) A binary mixture of 84 moles of ethane and 36 moles of n-heptane is confined in a vessel at P = 300psia and T = 260 F. Determine ˚ a. The moles of gas in the vessel if any. b. The composition of the gas expressed in mole fractions. c. The moles of ethane in the gas. Please circle the answers you want me to grade.
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2 The Temperature-Composition phase diagram for all possible mixtures of ethane and n- heptane at P = 300 psia is shown in Figure 1 for your use. Pressure = 300 psia 0 50 100 150 200 250 300 350 400 450 500 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 Mole Fraction of Ethane Temperature (deg F) GAS LIQUID Figure 1. Temperature-Composition diagram for Ethane/n-Heptane mixtures.
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3 Problem 2 ( 25 points ) a.
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Test1Spring05 - 1 PGE 312 - SPRING 2005 Physical and...

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