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During a change of state, the average kinetic energy of molecules...Select one:a. increases.b. decreases.c. increases or decreases depending on the substance.d. stays the same.
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During a change of state, the average kinetic energy of molecules...Select one:a. increases.b. decreases.c. increases or decreases depending on the substance.d. stays the same.

User Mikael Engver
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During a change of state the temperature of the substance remains the same; since the temperature measures the average kinetic energy of the atoms of the substance, we conclude that the average kinetic energy stays the same; therefore, the answer is d.

User Jesse Eichar
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