1. Theoretical Yield: 2.05 g salicylic acid x (180g aspirin/1 mol) x (1 mol/138 g salicylic acid) = g aspirin 2. Mass of filter paper 2.56 g 3. Mass of filter paper and aspirin 5.42 g 4. Mas of aspirin (3-2) g 5. Percent Yield [(4)/(1)] x 100 % 6. Test No. Sample Strength 1 Salicylic Acid 2 Your Aspirin 3 Commercial Aspirin