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CHEM 304 – 3/16/12

CHEM 304 – 3/16/12. Your “Personal Carbon Footprint” Assignment - Chemical Mass & Energy Balance - Some specifics Exam #1 Average =. For methane combustion: CH 4 + 2 O 2 —> 2 H 2 O + CO 2 If 1000 g of CH 4 are burned:

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CHEM 304 – 3/16/12

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  1. CHEM 304 – 3/16/12 Your “Personal Carbon Footprint” Assignment - Chemical Mass & Energy Balance - Some specifics Exam #1 Average =

  2. For methane combustion: CH4 + 2 O2 —> 2 H2O + CO2 If 1000 g of CH4 are burned: i) How many grams of H2O are produced? ii) How many grams of CO2 are produced?

  3. For methane combustion: CH4 + 2 O2 —> 2 H2O + CO2 + 890 kJ If 1000 kg (1 metric ton) of CH4 is burned, how much heat (energy) is produced? How many grams of CH4 is burned if 105 megajoules (105 x 106 J)* of energy are produced? How much CO2? *(this is 1 “THERM” – the unit on a utility bill!)

  4. Converting to kJ (per day) or g (per day)

  5. http://www.fueleconomy.gov/ • Dr Jim drives ~ 150 miles per week (100 w/out kids, 200 w/ kids …) • 1997 Subaru legacy wagon:

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