q1r.125 - Dr Zellmer Time 30 mins Chemistry 125 Winter...

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Chemistry 125 Thursday Time: 30 mins Winter Quarter 2012 January 26, 2012 Quiz I Name Rec. TA/time ---------------------------------------------------------------------------------------------------------------------------------------- Show ALL your work or EXPLAIN to receive full credit. R = 0.08206 L C atm/mol C K = 8.314 J/mol C K 1. (6 pts) Consider a steel tank with a volume of 10.0 L that can withstand a pressure of 30.0 lb/in 2 . A sample of He gas has a volume of 50.0 L at STP. If the He gas is put in the steel tank, can liquid nitrogen (boiling point of -196°C) be used to keep the tank from exploding? (1 atm = 760 mmHg = 760 torr = 101.325 kPa = 14.7 lb/in 2 ) 3. (5 pts) If the temperature of a gas increases from 200.0 K to 800.0 K what happens to the average kinetic energy of the gas particles? Be specific and quantitative using Kinetic Molecular Theory to explain. Also , sketch a qualitative picture of the distribution of speeds at the two temperatures (i.e. sketch what the two curves look like relative to each other). Copyright R. J. Zellmer, January 26, 2012
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This note was uploaded on 02/19/2012 for the course CHEM 125 taught by Professor Zellmer during the Winter '08 term at Ohio State.

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q1r.125 - Dr Zellmer Time 30 mins Chemistry 125 Winter...

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