If a particular utility burned 2.10 million tons of coal that was 2.00% sulfur by weight, how many tons of sulfur dioxide was emitted?

2 % 0f 2.10 million tons = .042 million tons of sulfur

 

sulfur DIOXIDE is basically twice as heavy as sulfur alone

 

2  x  .042 = .084 million tons     or 84 000 tons of sulfur dioxide