Mathematically determine the limiting reactant when 15.00 g aluminum sulfide and 10.00 g water react to completion. The
equation for the reaction is:
AL2S3 + 6 H20 ---> 2 Al(OH)3 + 3 H2S

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Molarity is moles of solute over liters of solution. idk if that is what you are talking about, but you can convert moles of solute to grams of solute using dimensional analyzes by using molar mass found on the periodic table.