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(s)+2hcl(aq)→fecl2(aq)+h2(g)
how many kilograms of iron were needed to produce this volume of h2 if the temperature was 21 ∘c? (for simplicity, assume that the pressure experienced by the balloon will be 1.00 atm.)