CAS PS 211 Lecture Notes - Lecture 18: Boiling Point, Prokaryotic Small Ribosomal Subunit, Thermohaline Circulation
15 Sep 2016
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Document Summary
Water has the highest latent heat of vaporization of any known substance. Heat is released as hydrogen bonds form to make ice. Water evaporates from the ocean, moves higher (less dense), rises and expands and cools adiabatically. 1 meter of water evaporates from the ocean surface/ year, ~80,000 cubic miles. Anvil clouds air went up really hot, really fast, cooled quickly. Large difference between water"s latent heat of fusion and its latent heat of vaporization. B/c all hydrogen bonds need to be broken to change from liquid to gaseous state. Seawater and pure water have slightly different thermal properties. Colligative properties of water physical properties that change when substances (e. g. salts) are added. Density, melting and freezing points, thermal inertia, latent heat. Only . 96 calories is needed to raise the temp of 1g of seawater. Dissolved solids interfere with the formation of the ice lattice. The saltier the water the lower the freezing point, like antifreeze.
