A3.31 × 10-4 m solution of a new drug (273 g•mol-1) has an absorbance of 0.750 in a 1.00-cm cell. a 0.3122 g tablet containing the drug is dissolved in water to a final volume of 500.0 ml, and has an absorbance of 0.654 under the same conditions. what is the mass percent of the drug in the tablet?
a) 87.4
b) 56.9
c) 18.9
d) 12.6