I need help with this please. Thanks?!

Answer 1

Disagree. The remaining liquid cools. You need to define your system well. Evaporation is endothermic - it results in cooling of the bulk liquid.

The question does not specify any additional heat (energy) sources, so we cannot assume either external heating of the bulk liquid or the liquid-vapor interface.

The statement "able to evaporate" is not magic. It means that from an initial total energy state of the liquid, a portion "obtained" the energy to evaporate, which is a definite, physical property.

In a "closed system" of the liquid, that energy MUST come from the other "equal velocity" molecules. That would in turn require the bulk energy (molecular velocity) of the remaining liquid to decrease. That would normally be observed as a decrease (cooling) in temperature.

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Answer 2

Adrian Ayala

Of course! I'm here to help. Please let me know what specific question or topic you need assistance with, and I'll provide the information you're looking for.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.