Acid rain was at one time an important point of
contention between the United States and Canada.
of this acid was the result of the emission of
sulfur oxides by coal-fired electricity-generating
plants in southern Indiana and Ohio. These sulfur
oxides, when dissolved in rainwater, formed sulfuric
acid and hence "acid rain." How many metric
tonnes of Indiana coal, which averages 3.5% sulfur
by weight, would yield the H2S04 required to produce
a 0.9-in. rainfall of pH 3.90 precipitation over
a 104 square mile area?
The answer is 3.4 * 10^4 tonnes, i just don't know how to get it