The temperature change that indicates an increase in the average kinetic energy of the molecules in a sample is 255 K to 0°C.
Chemical reactions occur when particles of reactants react or collide with one another, hence, when particles collide faster, reaction also occurs faster.
One of the ways to make reactions occur faster i.e. increasing the average kinetic energy is by increasing the temperature.
The example that depicts an increase in temperature is 255K to 0°C, which is equivalent to 255K to 273K.
Therefore, the temperature change that indicates an increase in the average kinetic energy of the molecules in a sample is 255 K to 0°C.
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