Aspirin, C9H8O4, is prepared by reacting salicylic acid, C7H6O3, with acetic anhydride,...

Aspirin, C9H8O4, is prepared by reacting salicylic acid, C₇H₆O₃, with acetic anhydride, C₄H₆O₃, in the reaction

A student is told to prepare 45.0 g of aspirin. She is also told to use a 55.0% excess of acetic anhydride and to expect to get an 85.0% yield in the reaction. How many grams of each reactant should she use?