First, you must write the balanced equation and convert each reactant's mass to moles. The reactant yielding fewer moles of product dictates the theoretical yield. Now, let us calculate step-by-step on the board. This takes me back to my own desk with the atlas—the map gives the true distances, but one must always check the scale, just as you check which reactant is limiting. It is a quiet satisfaction, finding the correct path.
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