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Kelvin is an absolute temperature scale, which means that it defines "0" as the lowest possible energy state

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Kelvin is an absolute temperature scale, which means that it defines "0" as the lowest possible energy state.

Now, when working with the , we're working under the assumption, thanks to the kinetic molecular theory, that the energies of gas particles depend on their temperature. As a result, we need to use Kelvin, because if we didn't, any temperature below zero would indicate a negative energy for the gas molecules, which doesn't happen.

OK.