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Arihangdu

  • one year ago

Fe -59 has a half life of 45.1 days. How old is an iron nail if the Fe-59 content is 25% that of a new sample of iron? Please show all calculation.

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  1. Arihangdu
    • one year ago
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    Will medal and fan as soon as possible.

  2. cuanchi
    • one year ago
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    One half life is the time that takes to decrease the amount of the nucleoide in half of the original amount. That means that in 45.1 days (one half life) you will have 50% of the original amount of Fe-59 compared with the new sample of iron In two half life (45.1 days x 2) you will have 50% of the 50%, that means 25% of the new sample contents. What do you think is the answer?

  3. Arihangdu
    • one year ago
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    25%=25/100 =1/4. (1/2)n=1/4.so, n=2 half lives. 45.1 days x 2 half lives=90.2 days . Right?

  4. Arihangdu
    • one year ago
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    Is this correct? My friends. I'm not sure.

  5. Arihangdu
    • one year ago
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    Please help me to check my answer

  6. cuanchi
    • one year ago
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    Yes that is Perfect of a Master!!!!

  7. Arihangdu
    • one year ago
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    Hank you my friend.

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