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26 December, 20:59

Caffeine in the blood stream has a half life of 5 hours. A venti

sized coffee from Starbucks has 415 mg of caffeine. How much

caffeine would be left (to the nearest whole number) behind in

your body 22 hours after drinking a venti coffee?

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Answers (1)
  1. 26 December, 22:01
    0
    20 mg

    Step-by-step explanation:

    The amount remaining is:

    A = P (½) ^ (t / T)

    where P is the original amount,

    t is time,

    and T is the half life.

    A = 415 (½) ^ (22/5)

    A ≈ 20
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