Pb(SO4)2 + LINO3 = pb(NO3)4 + Li2SO4 how many moles of lithium nitrate will be needed to make 30 moles of lithium sulfate

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. initial mass and yield sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

Can someone me with questions 12 and 13 plz.

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.