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Key Prob Set 1 09-106 S 11

# Key Prob Set 1 09-106 S 11 - Name Recitation(CIRCLE ONE TA...

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1 Name ______________________________ _ 09-106 Spring 2011 Recitation ( CIRCLE ONE TA and ONE TIME ): Christian Steve Brendan 6:30 7:30 Problem Set 1 DUE Fri. 1/21 (20 points) PART I 1. 10.0 mol of H 2 gas (as always, considered ideal) is initially contained in a 50.0 L vessel at a pressure of 3.00 atm. The average molar heat capacity of H 2 at constant pressure is 29.3 J K -1 mol -1 in the temperature range involved. The gas is cooled reversibly at constant pressure from its initial state to a volume of 30.0 L. Calculate the following for this process: (a) The final temperature. (b) The work done. (c) Δ E for the gas (d) q for the gas. (e) Δ H for the gas.

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2 2. A 505 g piece of copper tubing is heated to 99.9°C and placed in an insulated vessel contain- ing 59.8 g of water at 24.8°C. Assuming no loss of water and a heat capacity for the vessel of 10.0 J/K, what is the final temperature of the system? [ c of copper = 0.387 J/(g·degree)]
3 3. A 1.50 mol sample of an ideal gas expands reversibly in an insulated vessel to twice its original volume. In the expansion the temperature dropped from 296 K to 239 K.

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Key Prob Set 1 09-106 S 11 - Name Recitation(CIRCLE ONE TA...

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