Benzene and toluene form an ideal solution. At 25 oC, the vapor pressure of pure benzene is 100 torr, and the vapor pressure of pure toluene is 30.0 torr. A solution is prepared of 1.0 mol benzene and 2.0 mol toluene. Some of the solution evaporates in a closed system. What is the mole fraction of benzene in the vapor

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Ametal with a large number of free flowing electrons most likely has good conductivity

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -