On December 1, 1783 Jacques Charles became the first human topilot a non-tethered hydrogen balloon. He flew the balloon forfifteen miles and stayed in the air for a total flight time of 45minutes. The balloon was made of silk coated with a thin layer ofnatural rubber and had a diameter of 27 feet. He generated thehydrogen gas needed to lift the balloon by mixing a large amount ofiron with aqueous sulfuric acid. If he used 1x10^3 lbs. of iron and excess sulfuric acid, how many liters of hydrogen gas were made?
Fe(s) + H2SO4(aq) -> FeSO4(aq) + H2(g)