J.R. S. answered 04/03/21
Ph.D. University Professor with 10+ years Tutoring Experience
H2CO3 + Mg(OH)2 --> MgCO3 + 2 H2O
2 moles of H2O are produced from every 1 mole of acid (H2CO3). Use this information to find moles of water produced from 26.6 moles of acid.
22.6 moles H2CO3 x 2 moles H2O/1 mol H2CO3 = 45.2 moles H2O