A single tablet of over-the-counter pain reliever contains exactly 275mg of aspirin (C9H8O4).
Average atomic masses (amu): C = 12.01, H = 1.008, O = 16.00.
Respond to the tasks below.
(a) Determine the molar mass of aspirin, showing your method clearly.
(b) Convert the tablet’s mass of aspirin to grams and calculate the amount of substance, in moles, of aspirin present in one tablet. Express the final answer in scientific notation with three significant figures.