Please explain question 9 The correct answer is option A I will mark your answer as the brainliest answer if I find it useful!
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Answer:The average kinetic energy of molecules.
Explanation: Boiling. As a liquid is heated, the average kinetic energy of its particles increases. The rate of evaporation increases as more and more molecules are able to escape the liquid's surface into the vapor phase. ... The boiling point is the temperature at which the vapor pressure of a liquid is equal to the external pressure ...
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