Quiz Key 1 - Chemistry 152A Quiz # 1 (April 8, 2008)...

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Chemistry 152A Tuesday Quiz (@ end of period) Quiz # 1 (April 8, 2008) Value: 10 points; Time: 10 minutes Name _______KEY_____ _______________ Section ___A ______________ Show the steps used to arrive at your result. Useful Information () ( ) ( ) 8.31 / 0.082 / ext V R Jm o lK A t mm o H E P V Eqw w PV En cT P Vn R T =− = Δ = Δ + Δ Δ=+ = − Δ Δ= Δ = A Compare with problems Z9: 19, and 27. Think about a gas in a balloon: 40 moles of He gas starts off at ( ) 0 or 273 C ° K J J , 1 Atm (or 1 Bar), and is heated by adding 20kJ of heat energy. The external pressure on the gas remains at 1 Atm and the gas expands by 10% a) What is the heat transferred between the gas and the environment? (Be clear on the sign of the heat.) 20 20,000
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This note was uploaded on 05/02/2008 for the course CHEM 142,152,16 taught by Professor Unknown during the Fall '08 term at University of Washington.

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