magnesium hydroxide Mg(OH)2 is an antacid that is used to relieve indigestion, sour stomach and hurtburn. it can be prepared by reacting magnesium chloride, MgCL2 and sodium hydroxide, NaOH with the by-product of sodium chlrodie, Nacl. in an experiment, a student allowed 15.1g of MgCL2 to react with 9.35 g NaOH. Calculate the mass in grams of Mg(OH)2 that could be obtained at the end of the experiment.