Chem Test 2 Practice 2010

Chem Test 2 Practice 2010 - C hem 1331 Test 2 P ractice 1 ....

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Chem 1331 Test 2 Practice 1.   The barometeric pressure was 749.6 mmHg when the open end manometer attached to a flask holding a gas  read 13.0 mmHg. (mercury level highest on the side connected to the flask.) what is the pressure of the gas in  the flask in kilopascals?  1.00 atm = 101.3 kPa  (Do not type the units.) Hint: sketch the flask and manometer.    Student Response Correct Answer Answer: 45   98.2 Score: 0/1    2.   Five 22.4 L containers each hold a different gas at STP. The container holding which gas would have the  greatest mass, in grams?    Score: 1/1    3.   A 125-mL tank is charged with oxygen until the pressure is 75.0 atm at 25 degrees C. Calculate the moles of  oxygen in the tank. 
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  Score: 1/1    4.   Calculate the density of ammonia gas,NH3, at 24 degrees C and 738 torr.    Score: 0/1    5.   A mixture of hydrogen gas and water vapor has a total pressure of 738 mm Hg. If the partial pressure of water  vapor is 17.5 mm Hg, calculate the mole fraction of hydrogen in the mixture. 
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This note was uploaded on 03/06/2011 for the course CHEM 1331 taught by Professor Bott during the Fall '08 term at University of Houston.

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Chem Test 2 Practice 2010 - C hem 1331 Test 2 P ractice 1 ....

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