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A liquid placed in a closed container will evaporate until equilibrium is reached. At equilibrium, which of the following statements is false?
A. The partial pressure exerted by the vapor molecules is called the vapor pressure of the liquid.
B. Liquid molecules are still evaporating.
C. The number of vapor molecules remains essentially constant.
D. The partial pressure of the vapor is constant.
E. The boundary (meniscus) between liquid and vapor disappears.
the vapor leaving the top of a distillation column goes to a condenser in which either total or partial condensation takes place.
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A 155 g sample of an unknown substance was heated from 25.0°C to 40.0°C. In the process, the substance absorbed 5696 J of energy. What is the specific heat of the substance?
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