The amount of work to move a chair to the living room is equal to 10 joules. How much work would it be to move the same chair using a simple machine?

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other

Answercreating graphs and performing calculations;

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 -