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### Topic: Gases: 0.0840 dm3 of a gas is collected by water displacement at 22.0oC  (Read 5757 times)

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#### Me-Me

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##### Gases: 0.0840 dm3 of a gas is collected by water displacement at 22.0oC
« on: June 18, 2004, 09:02:37 AM »
There are two parts to these two problems.  1.  Name the laws.  2.  Solve the problems.  I must have the correct set-up and answers for credit.

Problems:

1.   0.0840 dm3 of a gas is collected by water displacement at 22.0oC
and 99.8 kPa.  What volume would the dry gas occupy at standard
pressure and 22.0oC?  (water vapor pressure at 22.oC = 2.6 kPa.

2.   A gas volume increases from 50.0 dm3 to 110 dm3 when heated
from 75oC (Pressure constant).  What is the final temperature of
the gas?

Thank you
« Last Edit: April 09, 2005, 07:43:28 PM by Mitch »

#### Donaldson Tan

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##### Re:Gases
« Reply #1 on: June 19, 2004, 10:53:08 AM »
Please refer to the URL below first before any posting. thank you.

Use PV = nRT to solve both your problems. Assume you are working with dry gas all the time.
« Last Edit: June 19, 2004, 10:54:33 AM by geodome »
"Say you're in a [chemical] plant and there's a snake on the floor. What are you going to do? Call a consultant? Get a meeting together to talk about which color is the snake? Employees should do one thing: walk over there and you step on the friggin� snake." - Jean-Pierre Garnier, CEO of Glaxosmithkline, June 2006

#### AWK

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##### Re:Gases
« Reply #2 on: June 20, 2004, 06:36:52 AM »
Pressure of dry gas for problem 1 is 99.8-2.6 = 97.2 hPa
for naming the laws see:
http://www.sru.edu/depts/educatio/students/winter/gaslaw.htm
AWK