One of the variables that affects the volume of a gas is the temperature of the gas and its surroundings. This volume-temperature relationship is quantified in Charles's law. The law states that as the temperature of a gas decreases, the volume of the gas decreases proportionately. An ideal gas at 273 K, for example would decrease in volume by 1/273 of its original volume for each Celsius degree the temperature decreases. If the temperature decreased sufficiently, the volume should decrease to zero. Real gases, however, liquefy and solidify long before this theoretical limit, called absolute zero, is reached. By using air as a sample of a real gas and limiting the temperature range, it is possible to estimate the temperature that would correspond to absolute zero.
Demonstrate the relationships between t
Remove the pipet from the water bath. Dry the outside of the pipet, with the paper towel. Expel the water, counting the number of drops of water that were drawn into the pipet.
Record the room temperature and the number of drops.
Estimate the temperature of absolute zero by extrapolation.
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