Question

calculate the percent of your sample lost during recrystallization? if pure aspirin costs 0.0861 cents/mg, how much money was lost through the recrystallization process?

Answer 1

The money lost through the recrystallization process $= 196.2 \times 10^9=196.2$ billion

As per the data given in the question,

Mass of aspirin formed =1.366 g

Mass of recrystallized aspirin =0.209 g

Loss of mass of aspirin during recrystallization =1.366-0.209 g=1.157 g

Per cent loss $=\frac{1.157}{1.366} \times 100=84.7 \%$

Cost of 1 mg aspirin =0.0861 cents

cost of 1.157 g or 1157 mg aspirin $=0.0861 \times 1157=99.6177$ cent =1 (approximately)

41000 metric tons of aspirin $=41000 \times 100 kg=41000 \times 1000 \times 1000 g=41 \times 10^9g$

Loss during production of $0.209 g$ of aspirin =1

Loss during production of $41 \times 10^9 \mathrm{~g}$ of aspirin $=1 / 0.209 \times 41 \times 10^9=196.2 \times 10^9$

Hence, loss $= 196.2 \times 10^9=196.2$ billion

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