If you took a reactant A and calculated the number of moles of another reactant B that is required to use up all of A. How do you know which
of the two reactants is the limiting one?

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?