which description applies to a system in a sealed flask that is half full of water?
(sorry about that)
A. only evaporation occurs, but it eventually stops.
B. only condensation occurs, but it eventually stops.
C. Neither evaporation nor condensation occurs
D. Both evaporation and condensation occur.
i think its D, am i right ?
I agree.
Yes, you are correct. In a sealed flask that is half full of water, both evaporation and condensation occur.
Explanation:
Evaporation is the process by which water molecules from the liquid state gain enough energy to escape into the gas phase. In a sealed flask, there is a limited amount of water exposed to the air inside the flask. As a result, some water molecules will have enough energy to evaporate into the gas phase.
On the other hand, condensation is the process by which water vapor molecules in the gas phase lose energy and come together to form liquid water. In a sealed flask, as the water vapor molecules evaporate, they encounter cooler surfaces, such as the sides of the flask, and lose energy. This causes the water vapor to condense back into liquid water.
Therefore, in a sealed flask that is half full of water, evaporation occurs as water molecules escape into the gas phase, and condensation also occurs as the water vapor molecules lose energy and transition back into liquid water.