Manganese can be extracted from its ore, hausmannite, by heating with aluminum. 3Mn3O4+ 8Al → 4Al2O3+ 9Mn
23 tonnes of ore is processed, and 200.0 kg of manganese obtained. Calculate the percentage by mass of Mn3O4 in the ore.

Temperature and pressure

The answer is celsius 

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 -