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Gekata [30.6K]
3 years ago
12

What happens to the temperature of the liquid in a cup of water as some of the water evaporates?

Chemistry
2 answers:
Grace [21]3 years ago
8 0

C. The temperature decreases because the most energetic molecules escape.


PolarNik [594]3 years ago
7 0

Answer: C. The temperature decreases because the most energetic molecules escape.

Explanation: Evaporation is surface phenomenon in which liquid molecules gain energy from surrounding molecules and thus these high energy molecules escape from the surface in the form of vapors thus leaving low energy molecules in the system.

As the kinetic energy of the left molecules decreases, the temperature of the molecules decreases as kinetic energy is directly proportional to temperature. Thus low temperature results in cooling of the system.

K.E=\frac{3}{2}\times RT

R= gas constant

T= temperature

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Answer:

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This is given by :

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In this case the suggestion given to reduce the aircraft's cargo load is the right move as reducing the load on the aircraft will decrease the mass of the whole aircraft.  This in turn will help the aircraft to accelerate more as acceleration inversely varies with mass. Thus the aircraft will be able to reach its flying speed even on a short run way.

Hence, Newton's second law is applied.

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