The balanced chemical equation for the reaction between barium hydroxide and sulfuric acid is:
Ba(OH)2 (aq) + H2SO4 (aq) → BaSO4 (s) + 2H2O (l)
We can interpret this to mean:
1 mole of sulfuric acid and ____ mole(s) of barium hydroxide
React to produce: ____ mole(s) of barium sulfate and ____ moles of water.