AP Bio Hydrogen Please Help !?

[eoforwic]

In agricultural areas, farmers pay close attention to the weather forecast. Right before a predicted overnight freeze, farmers spray water on crops to protect the plants. Use the properties of water to explain how this method works. Be sure to mention why hydrogen bonds are responsible for this phenomenon.

[bing49]

Florida orange producers are famous for doing this...

water has an incredibly high heat of fusion - that is water will hang out at 0C and it takes a long time for the water to freeze. A high heat of fusion means that, even if the temperature of the air changes a lot, water will shelter you from those changes and provide a pretty stable environment. Thanks, water. When you spray water on to the crops, the water that was sprayed freezes first because it is on the surface. But as it freezes, it loses its heat of fusion, heat that is transferred to the crop and the atmosphere.

the reason water has a high heat of fusion is H-bonds. Ice has specifically orienteded water to maximize the H-bonding. this is also the reason ice is less dense than water.