Both Jacques Charles and Joseph Louis Guy-Lussac were avid balloonists. In his original flight in 1783, Jacques Charles used a balloon that contained approximately 31100 L of H2. He generated the H2 using the reaction between iron and hydrochloric acid:
Fe + 2HCl ----> FeCl2 + H2
How many kilograms of iron were needed to produce this volume of if the temperature was 21 deg. C? Update:
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