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Yesterday, 21:43

The half-life of protactinium-226 is 2 minutes if you started with 20 grams of pa-226 how much do you have after 8 minutes

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  1. Today, 01:36
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    Divide the amount in half for every 2 minutes

    0 minutes = 20 grams

    2 minutes = 20/2 = 10

    4 minutes = 10/2 = 5

    6 minutes = 5/2 = 2.5

    8 minutes = 2.5/2 = 1.25 grams
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