4- Aspirin can be made in the laboratory by reacting aceticanhydride (C4H6O3) with salicylicacid (C7H6O3) to form aspirin(C9H8O4) and acetic acid(HC2H3O2). The balanced equationis:
           C4H6O3  +  C7H6O3    →    C9H8O4  +  HC2H3O2
           In a laboratory synthesis, a student begins with 3.00 mL of aceticanhydride (density = 1.08 g/mL) and 1.25 g salicylic acid. Once thereaction is complete, the student collects 1.22 grams ofaspirin.Determine the limiting reactant, theoretical yield ofaspirin, and percent yield for the reaction.
5.        Combustionanalysis of a 13.42 g sample of equilin (which contains onlycarbon, hydrogen and oxygen) produces 39.61 g of CO2 and9.01 g of H2O. The molar mass of equilin is 268.34g/mol. Find the molecular formula of equilin.
