PH questions answer both please

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2