1. Calculate the weight (number of pounds) of each rank of coal that would have to be burned to produce 3.5 million BTU (or 3,500,000 BTU) of heat, using the data in the table. Because a range of heating values (or energy output) is given for each coal rank, include a range in your answers. Coal Rank Lignite Sub- bituminous coal Bituminous coal Anthracite coal Carbon Content 46 - 60% 46 - 60% 46 - 86% 86 - 98% 1.00 x 106 BTU X X 1.00 lb 8.30 x 10 BTU Heating value or energy output (BTU per pound) 5.50 x 10 to 8.30 x 10 BTU/lb (average= 6,900 BTU/lb) 8.30 x 10 to 1.30 x 104 BTU /lb Sample computation for Lignite: 1.00lb 1.00 x 106 x 1 Kg 2.20 lbs 5.50 x 10 BTU 1.10 x 104 to 1.50 x 104 BTU /lb 1.35 x 104 to 1.56 x 104 BTU/lb X = 82.6 Kg 1 Kg 2.20 lbs = = 54.76Kg Weight of coal burned to produce 1 million BTU? (Kg) 54.76Kg- 82.6Kg 2. How many billion metric tons of CO have been added to the atmosphere between 1800 and June of 2020? Show all pertinent solutions in the box provided. 3. Compute for the amount of increase in concentration of CO in ppm and in metric tons. Year Atmospheric CO Weight of CO (in billion metric tons) 683.73 852.00 1966 2014 amount of increase from 1966 to 2014 concentration 321 ppm 400 ppm