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The Relationship between the Pressure and the Volume of a Gas.
Member rating: No Rating | Words: | Submitted: Tue Sep 23 2003
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The Relationship between the Pressure and the Volume of a Gas Apparatus/Method To decrease the volume of the gas, we need to pump more oil into the tubing system and thus decrease the space left over for the air in the tube. We read the volume of the gas off the scale next to the tube of gas, and we read the pressure off the gauge, as shown above. Prediction I predict that as we 'squash' the gas into a smaller volume, it's pressure will increase due to the molecules of the gas being closer together. To be more accurate, I would say that when the volume is halved, the pressure will double. Results Volume (cm3) Pressure (Pa) 54.1 101,000 45.1 121,000 38.9 143,000 32.0 172,000 24.0 231,000 18.9 297,000 17.2 320,000 16.6 335,000 20.0 279,000 23.5 234,000 28.1 196,000 31.1 179,000 38.0 145,000 43.1 129,000 55.9 101,000 Analysis From this experiment, we have found out that if we halve the volume of gas, we double the pressure or vice versa - when we double the volume, we half the pressure. For example, when we increased the volume from...
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