Dynamic equilibrium between liquid and gas is established when __________ . a. the vapor pressure of the liquid equals the external pressureb. the liquid and vapor are at the same temperaturec. a liquid vaporizes and condenses at the same rated. the liquid is entirely evaporated
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c. a liquid vaporizes and condenses at the same rate
Dynamic equilibrium between liquid and gas is achieved when the rate of vaporization (liquid turning into vapor) equals the rate of condensation (vapor turning back into liquid). This occurs when the liquid and vapor phases coexist and the process is in balance.