Chemistry

Problem

A pediatric tablet contains 125 mg of aspirin (

\mathrm{C_9H_8O_4}

, molar mass 180.16 g mol

^{-1}

). Approximately how many aspirin molecules does the tablet deliver? a)

2.3 \times 10^{20}

molecules b)

4.2 \times 10^{20}

molecules c)

4.2 \times 10^{23}

molecules d)

7.5 \times 10^{20}

molecules