UTF-8Gas Laws: Volume-Pressure Relationship2402332071org.concord.modeler.text.LineIcon750.03010105<html>
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<font face="Verdana, Arial, Helvetica, sans-serif" size="5" color="#FFFFFF"><strong>Gas Laws:</strong> Volume-Pressure Relationship.</font>
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<td><font face="Verdana, Arial, Helvetica, sans-serif" size="4"><b>What is the relationship between pressure and the volume of a gas?</b>
The ideal gas law is represented by the equation <b>PV=nRT</b>, where <b>P</b> is pressure, <b>V</b> is volume, <b>n</b> is the number of particles, <b>R</b> is a constant and <b>T</b> is temperature.
The next few pages will give evidence for the relationship of the variables in the equation: pressure, volume, temperature and number of molecules. We will begin with pressure and volume.
What happens to the pressure when you increase or decrease the volume?</font></td>
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<strong><font color="#a65d2c" size="4" face="Verdana, Arial, Helvetica, sans-serif">Measuring
Pressure </font></strong>
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<font size="4" face="Verdana, Arial, Helvetica, sans-serif">A pressure
gauge is an instrument that measures pressure. It does so by converting
the effect of molecular collisions into something we can read. In the
model below, we set up a virtual gauge on one side of a movable wall. The
output is shown with a bar graph.</font>
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<b>Important Note:</b> The temperature of the gas in the model on the
right is kept constant.
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Use the following buttons to start, stop and reset the simulation:
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<input value="Run" name="run" type="submit" script="script:mw2d:1:run">
<input name="stop" value="Stop" type="submit" script="script:mw2d:1:stop">
<input name="reset" value="Reset" type="submit" script="script:mw2d:1:reset">
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-131628Lineorg.concord.mw2d.activity.AtomContainerpage3$0.mmlfalsefalseorg.concord.modeler.PageBarGraphWest pressure:Obstacle #0Pressure190250true88true-1-7f7f8000.00.8000000119209290.00487394025549292614.0org.concord.modeler.PageTextBox500.070.0<html>
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<b>Run until the simulation automatically stops, read the bar graph, and
then press the buttons on the right (➩).<br>Repeat for a few times.</b>
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falseorg.concord.modeler.PageButtonIncrease volume12530org.concord.mw2d.models.MolecularModel0trueExecute MW scriptorg.concord.modeler.PageButtonDecrease volume12530org.concord.mw2d.models.MolecularModel0trueExecute MW script1org.concord.modeler.PageTextArea372120<html>
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<font size="4" face="Arial, Helvetica, sans-serif"><strong>How does
changing the size of the container affect the pressure?</strong></font>
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<font size="4" face="Arial, Helvetica, sans-serif"><strong>Which of the
following best describe what occured as the volume increased?</strong></font>
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The strength and/or rate of collisions increasedThe strength and/or rate of collisions decreased.1-333334Line1org.concord.modeler.PageTextBox750.032.0<html>
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