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/extVRJmolKAtmmoH EPVEqww PVEncT PVnRT=−=−−Δ=Δ+ΔΔ=+=− ΔΔ= Δ=ACompare with problems Z9: 19, and 27. Think about a gas in a balloon: 40 moles of He gas starts off at ( )0or 273C°KJJ, 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.) 2020,000
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