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Volume is proportional to the absolute temperature provided mass and pressure of gas remains constant’
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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Having collected data about the differences in height as temperatures vary, the change in volume can now be measured. All units will be measured in millimetres The diameter of the capillary tube was measured to be 15.7mm ± 0.05mm in diameter by a micrometer. This makes the radius to be 7.8 ±0.05mm. The volume can be calculated using the formula: ? r ²× h = volume of a cylinder For example the volume of the gas bubble at 10 degrees centigrade where the bubble was 189 mm high, Can be calculated: ? × 7.8² × 189 mm =36124.41994 =36100mm³ As the height of the bubble was only measured to three significant figures, In calculating the volume of the bubble I can only be accurate to three significant figures as well Applying this formula to all temperatures gives the following results: Table showing volume of the gas bubble as temperature is increased Mean average temperature (degrees centigrade) Volume of air bubble (millimetres...
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