CHM115_SCB_Lecture4_2010_SN

CHM115_SCB_Lecture4_2010_SN - Lecture 4: Nuclear Chemistry...

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Lecture 4: Nuclear Chemistry Reading was: Chapter 23.1-23.3, and 23.6
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This Week and Next Week No Class Monday – Labor Day OWL Assignment – due TODAY Prelab Questions - Chapter 2 Reactions in Aqueous Solutions Textbook material that will be helpful: 3.2, 3.4-3.6, 3.9 Reading Assignments Lecture 5: Section 23.4-23.6 Lecture 6: Sections 23.7-23.9 Blackboard – folder with lab info. and references
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Nuclear Chemistry – Remember this  one?
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Let’s Talk Numbers Fossil Fuels – 11.6 TW Nuclear – 0.8 TW Biomass – 1.1 TW In the year 2001-2002, the world used approximately 13.5 TW of Energy. How did we do it?
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In the Future… By 2050, we will need ~27 TW, and by 2100, we will need ~43 TW. Here’s the current situation: 40-80 years of oil reserves left 50-150 years of oil left 60-160 years of natural gas left 207-590 years of gas resources 1,000-2,000 years of coal, shale, and tar sands left Technically, we have enough resources to spend 25-30 TW per year for 7 centuries. If we use all of this, what happens to our CO 2 level? The solution? Carbon-Neutral Fuels! Nocera and Lewis, PNAS , 2006, 15729.
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From Your Reading -  Question #1 How many nucleons are in an 19 F nucleus? (Answer with a number.) 9
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Types of decay α – a helium nucleus, 4 2 He β – an electron, 0 -1 e γ – a photon, no charge, no mass Neutron – 1 0 n Elements undergo decay:
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Which change involves alpha-decay ? a.
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CHM115_SCB_Lecture4_2010_SN - Lecture 4: Nuclear Chemistry...

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