Aspirin, $$\text{C}_9\text{H}_8\text{O}_4$$, is produced by the reaction between salicylic acid, $$\text{C}_7\text{H}_6\text{O}_3$$, and acetic anhydride, $$\text{C}_4\text{H}_6\text{O}_3$$, as per the reaction $$\text{C}_7\text{H}_6\text{O}_3 + \text{C}_4\text{H}_6\text{O}_3 \rightarrow \text{C}_9\text{H}_8\text{O}_4 + \text{C}_2\text{H}_4\text{O}_2$$. In the reaction of 155 g salicylic acid and 105 g acetic anhydride, assuming 80% conversion of the limiting reactant, the mass of aspirin formed, given molar masses in g per mol of 138 for salicylic acid, 102 for acetic anhydride and 180 for aspirin, is