5. Comparing the amount of CO, emitted when fossil fuels are burned. Weight of C

Question

5. Comparing the amount of CO, emitted when fossil fuels are burned. Weight of CO2 (in pounds) emitted per 1 million BTU of Fossil fuel Sub-bituminous coal Bituminous coal Anthracite coal Diesel fuel and heating oil 215.4 lb 214.3 lb 205.7 lb 228.6 lb 161.3 139.0 Natural gas (methane) a. Which fossil fuel in the table above produces the most CO2 when burned? b. Which fossil fuel produces the least CO when burned? 6. A gallon of gasoline weighs 6.073 lb. When a gallon of gasoline is burned, it produces about 19.64 pounds of CO2. How many pounds of COade you produce when you burn a full tank of gasoline (about 20 gallons)? 7. Each part per million (ppm) concentration of COz in the atmosphere is the equivalent to a global atmospheric mass of about 2.13 billion metric tons of COs. (1 metric ton 1000 kg, and 1 kg 2.20462 lb, so 1 metric ton 2204.62 lb.) In 1800, around the time of the Industrial Revolution, the atmospheric concentration of CO2 in the atmosphere was about 280 ppm. In the summer of 2014, there was more than 400 ppm of CO2in the atmosphere. a. How many billion metric tons of CO2 have been added to the at n 1800 and 2014?

Explanation / Answer

5)

a. Fossil fuel produces most CO2 when burned = ANTHRACITE COAL (228.6 lb)

b.  Fossil fuel produces least CO2 when burned = NATURAL GAS METHANE (117 lb)

6).

1 gallon of gasoline weighs = 6.073 lb

co2 produced when a gallon of gasoline burned = 19.64 pounds

co2 produced by burning a tank (20 gallans) of gasoline = (6.073 * 19.64 )lb = 119.2737 pounds

7).

In 1800 AD the co2 concentration in the atmosphere is = 280 ppm( parts per million)

In 2014 AD the co2 concentration in the atmosphere is = 400 ppm( parts per million)

Net ppm (concentration) increase in co2 level is = 400-280 = 120ppm

we know that

1ppm of co2 concentration in the atmosphere = 2.13 billion metric tonnes global atmospheric mass of co2

120 ppm of co2 concentration in the atmosphere = 120 * 2.13 billion metric tonnes global atmospheric mass of co2

120 ppm of co2 concentration in the atmosphere =255.6  billion metric tonnes global atmospheric mass of co2

Total amount of co2 added from 1800 ad to 2014 ad = 255.6  billion metric tonnes

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