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Discussion 11 - key

Discussion 11 - key - Key for Discussion Worksheet 11 The...

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Key for Discussion Worksheet 11 The pressure on top of Mt. Everest averages about 235 mm Hg. Covert this pressure to a. in Hg 9.25 in Hg b. psi 4.51 psi c. atm 0.309 atm d. kPa 31.3 kPa A sample of gas has an initial volume of 32.6 L at a pressure of 1.3 atm. If the sample is compressed to a volume of 13.8 L, what will its pressure be? 2 2 2 2 1 1 1 1 T n V P T n V P = atm P L L atm P V V P P V P V P 07 . 3 8 . 13 ) 6 . 32 )( 3 . 1 ( 2 2 2 1 1 2 2 2 1 1 = = = = A sample of nitrogen gas in a 1.75 L container exerts a pressure of 1.35 atm at 25 ºC. What is the pressure if the volume of the container is maintained constant and the temperature is raised to 355 ºC? 2 2 2 2 1 1 1 1 T n V P T n V P = 1 2 1 2 2 2 1 1 T T P P T P T P = = atm P K K atm P 84 . 2 ) 298 ( ) 628 )( 35 . 1 ( 2 2 = = Use the molar volume of a gas at STP to calculate the density (in g/mL) of carbon dioxide gas at STP? RT M m PV M m n nRT PV w w = = = mL g K mol L atm mol g w d K atm d mL L RT PM V m 00196 . 0 ) 1000 )( 273 )( 08206 . 0 ( ) 0 . 44 )( 00 . 1 ( 1000 = = = An experiment shows that a 113 mL gas sample has a mass of 0.171 g at a pressure of 721 mm Hg and a

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Discussion 11 - key - Key for Discussion Worksheet 11 The...

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