Answer:
180 molecules.
Step-by-step explanation:
Aspirin is a white, crystalline substance, C9H8O4, derivative of salicylic acid, used as an anti-inflammatory agent and to relieve the pain of headache, rheumatism, gout, neuralgia, etc.; acetylsalicylic acid.
Molar mass of C9H8O4, MM = 9*MM(C) + 8*MM(H) + 4*MM(O) = 9*12.01 + 8*1.008 + 4*16.0 = 180