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Gas Laws: The Volume-Pressure Relationship
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Sketch a plot of the four points (using graph paper, a graphing calculator, or excel),
where Volume is on the y axis. Then Proceed--->
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<font face="Verdana, Arial, Helvetica, sans-serif" size="5" color="#FFFFFF"><strong>Gas
Laws:</strong> The Volume-Pressure Relationship</font>
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<font face="Verdana, Arial, Helvetica, sans-serif" size="4">What is
the relationship between the pressure and the volume of a gas? </font>
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<font face="Verdana, Arial, Helvetica, sans-serif" size="4">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, pressure, is shown with a bar graph.</font>
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<font size="4">Directions:</font>
<ul>
<li>
<font size="3">Run the simulation <b>until it automatically stops</b>.</font>
</li>
<li>
<font size="3">What is the pressure? Read the ruler inside the model
and the bar graph outside, and record the data in the table below. </font>
</li>
<li>
<font size="3">Press the "Volume ↑" or "Volume ↓" button to increase
or decrease the volume and repeat the above steps. </font>
</li>
<li>
<font size="3">Repeat the above procedure to record three more data
points. </font>
</li>
</ul>
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<b><font size="2">Note:</font></b><font size="2"> The temperature of the
gas in the model on the right is kept constant.</font>
</p>
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<table width="100%">
<tr>
<td>
Record:
</td>
<td>
Point 1
</td>
<td>
Point 2
</td>
<td>
Point 3
</td>
<td>
Point 4
</td>
</tr>
<tr>
<td>
Volume :
</td>
<td>
<input type="text" size="20" question="Volume 1">
</td>
<td>
<input type="text" size="20" question="Volume 2">
</td>
<td>
<input type="text" size="20" question="Volume 3">
</td>
<td>
<input type="text" size="20" question="Volume 4">
</td>
</tr>
<tr>
<td>
Pressure:
</td>
<td>
<input type="text" size="20" question="Pressure 1">
</td>
<td>
<input type="text" size="20" question="Pressure 2">
</td>
<td>
<input type="text" size="20" question="Pressure 3">
</td>
<td>
<input type="text" size="20" question="Pressure 4">
</td>
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<html>
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<body marginheight="5" marginwidth="5" bgcolor="rgb(230, 230, 230)" face="Arial">
<strong>According to the plot you made for YOUR DATA, which of the four
graphs located in on the wall by the Room's vent fan best represents the
relationship between pressure and volume of a gas at constant temperature? </strong>
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<html><font size=4>❶</html>
<html><font size=4>❷</html>
<html><font size=4>❸</html>
<html><font size=4>❹</html>
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<font face="Verdana, Arial, Helvetica, sans-serif" size="4" color="#a65d2c"><strong>Boyle's
Law</strong></font>
</td>
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<tr>
<td colspan="2">
<img height="6" width="18" src="rule.png">
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<p class="firstp">
<b>Boyle's law</b> describes the relationship between pressure and
volume in a closed system when temperature and the number of molecules
remain the same. It is said that pressure and volume are ❒ <a href="script:page:0:message <t><font face=verdana>Inversely proportional: when two quantities change by reciprocal factors.<br>In other words, when one goes up, the other goes down.</font></t>">inversely
proportional.</a>
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<font face="Arial, Helvetica, sans-serif" size="4"><strong>In your own
words, describe the relationship between pressure and volume.</strong></font>
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