1.
Air Volume(ml) Pressure(atm) 1/Pressure
0 1.000 1
20.00 1.154 0.866
40.00 1.364 0.733
60.00 1.667 0.600
80.00 2.143 0.467
100.00 3.000 0.333
2. Construct a graph by hand or using a spreadsheet program, plotting the values for (1 / pressure) on
the x-axis and air volume on the y-axis.
3. Draw a straight line through the points.
5. Determine the slope of this line and record its value here. Be sure to include units for this slope value. If you are using a spreadsheet program, use its built-in function to find the slope of the straight line. In Excel, use the function SLOPE (y-values, x-values).
6. Is the volume of air proportional to its "reciprocal pressure", i.e., inversely proportional to its pressure?
Answers to the questions
After constructing the graph, the slope will be:
m= y2 - y1/x2-x1
= (100-0) / (0-1)
= 100 ml/-1atm
= -100 ml/atm
6. We see that as the pressure decreases the volume increases. From the graph, we can tell that the pressure is not proportional to the volume.
|
Free Forum Hosting
Important Announcement
Prev Message
