**A student was synthesizing aspirin in the lab. Using the amount of limiting reagent, she calculated the mass of aspirin that should form as 5.24g. When she weighed her aspirin product on the balance, its mass was 2.23g. What is the percent yield of the acetylsalicylic acid (aspirin)?**

**Answer:**

42.56 percent

Sig figs are important here, while the answer is indeed 43.56%, the CORRECT answer with sig figs is 42.6%.