The Active Ingredient in an Over the Counter Pain Killer

question 20

Multiple Choice

The active ingredient in an over the counter pain killer analgesic decomposes with a rate constant, k = 9.05 × 10^-4 day^-1. How many days does it take for 15% of the original ingredient to decompose?

• A) 730 days
• B) 414 days
• C) 365 days
• D) 180 days
• E) 78 days

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