C121 11-3 lec19GL

C121 11-3 lec19GL - CHEM 121 The Other Half Dr. Gary Leach...

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Unformatted text preview: CHEM 121 The Other Half Dr. Gary Leach office: TASC2 7072 tel: e-mail: 778 782 8065 gleach@sfu.ca Office Hours: Wed, Fri 2-3 pm Midterm Monday, October 24 6:30 pm Lecture 19 October 24, 2011 Bonding: General Concepts Today What is a chemical bond? (13.1) Bonding Types (13.1) (a) Ionic bonds (b) Covalent bonds (c) Metallic bonds Ionic Bonding (13.4-13.5) Stability of Ionic Bonds Crystal Lattice Energy (L.E.) Born-Haber Cycle Factors Affecting L.E. Bonding Determines Physical Properties C 60 Buckminsterfullerene DNA, Genomics & Biomembranes Atomic Force Microscopy 20 nm 100 nm Nanoscience Complexity of Atmospheric Chemistry The future of energy depends on reaching the holy grail of electricity generation finding a cheaper alternative to coal and other fossil fuels. Every day the sun delivers more energy than we consume Energy the Sun Provides in one hour Energy we need in one year Surface Area Required to Power the World 2030 Projection (496,805 square kilometers) Solar Power Alone- Zero Emissions Areas are calculated based on an assumption of 20% PCE @ 2000 hours/yr at 1000 W/m 2 striking distance. Based on US DOE BTU estimates for 2030 (678 quads) or 44% increase over 2009. Solar Irradiance Map Coal 16% 42% Petroleum 5% Natural Gas 20% Geothermal 0.3% Wind 1% Biomass 1% Solar power is a tiny % of global electricity Solar Power 0.1% Nuclear 14% Hydroelectric The Solar Potential 100,000 TW of Power Available for PV Only 0.015 % of this needed for all our power needs Typical intensity at high noon 1000 W/m 2 one hair dryer per square meter!...
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This note was uploaded on 12/10/2011 for the course CHEM 121 taught by Professor Leech during the Fall '11 term at Simon Fraser.

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C121 11-3 lec19GL - CHEM 121 The Other Half Dr. Gary Leach...

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