1. Calculate the theoretical yield of aspirin to be obtained, starting with 2.0 g of salicylic acid. 2. If 1.8 g of aspirin were obtained in this experiment, what would be the percent yield? 3. Write the general formula for obtaining an ester from an acid and an alcohol. 4. Identify R and R' in Equation 1 when ester, aspirin, is made from salicylic acid and acetic acid