Suppose an aspirin™ tablet contains 7 grains of the active ingredient, acetylsalicylic acid (1 grain = 64.7989 mg). if your tablet had a mass of 516 mg, calculate the percent recovery if you isolated 386 mg of acetylsalicylic acid in this experiment.

85.105 is the percent recovery if you isolated 386 mg of acetylsalicylic acid in this experiment.

Explanation:

Number of grains of acetylsalicylic acid = 7 grains

(1 grains = 64.7089 mg)

7 grains = 7 × 64.7089 mg = 453.5923 mg

Total mass of acetylsalicylic acid = 453.5923 mg

Total mass of tablet = M = 516 mg

Mass of acetylsalicylic acid recovered = 386 mg

The percent recovery of acetylsalicylic acid recovered:

85.105 is the percent recovery if you isolated 386 mg of acetylsalicylic acid in this experiment.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

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