give a reason why all temperatures in the absolute (kelvin) scale are in positive figures
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because William Kelvin decided to place the zero on his scale as the lowest temperature possible. The zero on the kelvin scale represents the Absolute Zero.
According to Charle's law, for an ideal gas its volume is proportional to the temperature at constant pressure. So while the temperature decreases the volume of the gas collapses and becomes zero at one specific point. The movement of the gas molecules cease at this point. William Kelvin represented this temperature as zero kelvin on his scale which is equivalent to -273.15 degrees on the celsius scale.
According to Charle's law, for an ideal gas its volume is proportional to the temperature at constant pressure. So while the temperature decreases the volume of the gas collapses and becomes zero at one specific point. The movement of the gas molecules cease at this point. William Kelvin represented this temperature as zero kelvin on his scale which is equivalent to -273.15 degrees on the celsius scale.
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