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Neptunium-239 has a half-life of 2.35 days. How many days must elapse for a sample of 239Np to decay to 0.100% of its original quantity

  • UIW -

    The half life equation is:
    N(t)/N(0) = (1/2)^(t/2.35)

    Solve for t when: N(t)/N(0) = 0.00100

  • UIW -

    I need the same help with this question and I'm at uiw too

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