Jacques Charles used this reaction to prepare hydrogen gas for his historic balloon flights: Fe(s) + H2SO4(aq) = FeSO4(aq) + H2(g) He wants to prepare a small test balloon to check flight conditions before he lifts off in his giant balloon. He has 234 grams of iron and 382 mL of 12 M (mol / L) sulfuric acid available. What is the maximum size his test balloon can be in L? The temperature in Paris is a chilly 18 celsius and the atmospheric pressure if 770 mm Hg. (This is a limiting reactant problem).

Why do the strengths of london (dispersion) forces generally increase with increasing molecular size? choose one: a. heavier atoms have stronger attractions for each other than lighter atoms. b. dispersion forces are all equal in magnitude; there is no size dependence. c. dispersion forces arise from the attraction between the nuclei of atoms, and larger molecules have larger nuclei. d. dispersion forces arise from dipoles caused by the electron distribution being distorted. larger molecules have more electrons and, therefore, more distortions and a bigger force. e. dispersion forces depend on distance. larger molecules are farther apart and so the forces are smaller.