Tthe world generated 1.0 x 1020 J of electricity. 75% of this electricity came from burning fossil fuels. For simplicity, lets assume coal was used everywhere. Lets assume that the efficiency of turning heat into electricity is X.

b) It is estimated that the atmosphere contains about 1.8 x 1020 moles of gas. Lets assume that the carbon dioxide added to the atmosphere accumulates. How much would the concentration of carbon dioxide in the atmosphere rise in one year due to electricity generation? Express your answer in ppm (parts per million).