Monday, January 22, 2007

Monday, January 22, 2007 - Water 1 water molecule can...

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1 water molecule can interact with 3 other water molecules. 70 to 90 percent of most life forms Sets the lower temperature limit for life Sets the upper temperature limit for life? (probably not) Important role in structures and properties of biological molecules. Water is a biological molecule. The unusual properties of water Results from hydrogen bonding. (Ask someone for notes…) Bonds Covalent: H-O 110 Kcal per mole (to make or break the bond) Weak (hydrogen bond) 4.5 kcal per mole (to make or break the bond) Hydrogen bonding effectively makes water a larger molecule. In ice, a water molecule interacts w/ exactly 4 other water molecules. In liquid water, a water molecule interacts with on average 3.6 or fewer other molecules. (can be made or broken relatively quickly) Small molecules- a comparison of properties Water H 2 O: Boiling point 100 degrees Celsius Melting Point 0 degrees Celsius Ammonia NH 3 Boiling point 35 degrees Celsius
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This note was uploaded on 04/07/2008 for the course PETE 2001 taught by Professor Thurber during the Spring '07 term at LSU.

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Monday, January 22, 2007 - Water 1 water molecule can...

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