25.0g of aluminum reacts with 55.0grams of chlorine gas to produce aluminum tetrichloride. Which reactant is liminting and how much product is produced?
Al + Cl2 -> AlCl3
Convert grams to mols for both reagents. moles = grams/molar mass.
Using the coefficients in the balanced equation, convert mols of EACH reactant (separately) to moles of the product.
In limiting reagent problems, the SMALLER value of product is the correct one to use. Convert that to grams by g = molesx molar mass.