246800 tons of sulfur dioxide was emitted by the utility company who burned 6.17 million tons of coal.
6.17 million tons of coal contain 2.00% sulfur, hence the weight of sulfur is:
Weight of sulfur = 2% of 6.17 million tons = 0.02 * 6170000 = 123400 tons
123400 tons of sulfur is found in 6.17 million tons of coal
The weight of sulfur dioxide is twice that of sulfur, hence:
Amount of sulfur dioxide emitted = 2 * 123400 tons = 246800 tons
246800 tons of sulfur dioxide was emitted.
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