Letter D ,because algae is food for fish (natural)
Can you make the picture clearer please or tell me what I’m supposed to do in comments?
The hydrogen bonds is an intermolecular force.
This is, it is an atracction among molecules, which trends to keep the molecules close one to each other quite strongly.
Vaporization is the pass from liquid, where the molecules are pretty close one to each other, to gas, where the molecules are more distant from each other. To reach that separation of the molecules, the strong hydrogen bonds must be overcome, which means a higher energy requirement than in similar compounds without hydrogen bonds.
That is reflected in high values for the enthalpy of vaporization in the compounds with hydrogen bonds (like hydrogen halides).
So, that leads to the option D. of the list of answers. enthalpy heat of vaporization gives the best indication of the relative strenght of hydrogen bonds.
Answer:
It depends.
Explanation:
Hot water will evaporate all on its own. In fact, cold water will also evaporate. It depends on how much water is already in the gas above (i.e., the humidity). If the humidity is 100%, then liquid water is in equilibrium with the gas above it. Water molecules will evaporate at the same rate they condense. Even at cooler temperatures, there is still enough energy in water for one of the molecules to occasionally get bounced out of the container into the air.
I wonder if you may be asking about the boiling point of water. At 100 degrees C, water boils (212 degrees F). These numbers assume 1 atmosphere pressure and on the Earth's surface. As the elevation increases, the boiling point of water decreases. The slight reduction in gravitational pull allows more molecules to escape in the the air.
If you are asking what temperature does water have to be to form steam, that also depends on the temperature and humidity of the airspace.