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18 October, 19:01

The half life of caffeine in a healthy adult is 5.7 hours. Jeremiah drinks 16 ounces of caffeinated coffee in the morning. How long will it take for only 40% of the caffeine to remain in his body?

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  1. 18 October, 19:13
    0
    around 3.5 hours
  2. 18 October, 19:22
    0
    The correct answer 7.5 hours.

    Step-by-step explanation:

    In this case, half life refers to the time that is necessary for a quantity to reduce to half of its original value. In this case, the half-life of caffeine is 5.7 hours, meaning that if we had 10 ounces of it, the remaining after this time would be 5 ounces.

    In the question, the initial amount is 16 ounces, so it will take 7.5 hours of the caffeine to remain in his body.
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