Iron is obtained commercially by the reaction of hematite (fe2o3) with carbon monoxide. how many grams of iron are produced if 13.0 moles of hematite react with 38.0 moles of carbon monoxide?

Equal numbers of moles of he(g), ar(g), and ne(g) are placed in a glass vessel at room temperature. if the vessel has a pinhole-sized leak, which of the following will be true regarding the relative values of the partial pressures of the gases remaining in the vessel after some of the gas mixture has effused?