3b. Suppose the total world energy consumption of fossil fuels equal to 3 x 107 KJ/yr, were to be obtained entirely by combustion of petroleum with the approximate chemical formula C2H3. Combustion of petroleum releases energy equal to 43 x 10 KJ/Kg. Estimate th- emissions of CO2 per year in metric tons. (Atomic weights of C = 12 and H = 1. ) 4 C2H3 + 11 02 →8 CO2 + 6 H20 %3D %3D

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