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Lecture 8_29post-1 - The Properties of Water and Carbon The...

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The Properties of Water and Carbon The chemical structure of water affects its properties. How is water important for life as we know it? Ionization and pH Making carbon molecules
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O H H δ + δ + δ - Water is a polar molecule.
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δ + O H H δ + δ - Polar O H H δ + δ + δ - O H H δ+ δ+ δ - O H H δ + δ + δ - O H H δ + δ + δ - Water makes hydrogen bonds
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The properties of water Excellent solvent High heat capacity High heat of vaporization High cohesive strength
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What can you determine about mystery solutions #1, #2, and #3 by their behavior in water?
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Water Methanol Acetone Melting Point (oC) 0 -97 -94.9 Boiling Point (oC) 100 64.7 56.53 Heat of Vaporization (kJ mol-1) 40.65 35.3 31.3 Specific Heat Capacity (kJ/kg-C) 4.19 1.40 2.22 Comparing water with less polar molecules
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How does this water strider float?
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How will this tree gather rain water?
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How does water affect our climate?
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How does water keep her cool?
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The properties of water are also important in molecules and cells.
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