Chemistry Stoichiometry

Question

In the balanced chemical equation below, how many moles of water are created if 17.1 moles of acid react with excess magnesium hydroxide?

H2CO3 + Mg(OH)2 —> MgCO3 + 2 H2O

Answer 1

H₂CO₃ + Mg(OH)₂ ==> MgCO₃ + 2 H₂O

Use dimensional analysis and stoichiometry:

17.1 moles H₂CO₃ x 2 moles H₂O / 1 mol H₂CO₃ = 34.2 moles H₂O created