Concentration from Ontario exam

by ramy
(canada)

Aerosol OT (AOT) is used in veterinary medicine as a laxative. If 250 g of AOT is dissolved in 1 000 mL of glycerin (density of glycerin is 1.25 g/mL), the concentration of AOT in the solution is:
A. 12.5% w/w.
B. 16.7% w/w.
C. 20.0% w/w.
D. 23.8% w/w.

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