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14 November, 10:00

A certain radioactive isotope has a half life of 6 hours. The starting amount is 100 grams. Write an exponential function to model this scenario. How much of the isotope remains after 12 hours?

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  1. 14 November, 11:31
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    25 gm

    Step-by-step explanation:

    N₍x₎ = N₍₀₎ * (1/2) ˣ/ˣ₍₁/₂₎

    N₍₁₂₎ = 100 * (1/2) ¹²/₆ = 100 * (1/2) ² = 25
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