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  1. #16
    vй?'s Avatar
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    Quote Originally Posted by Ian View Post
    im gonna fail my bio class when i take it next fall
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  2. #17
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    Quote Originally Posted by Disturbed View Post
    6.25 Grams of parent material left. Find the daughter material yourself.

    And mega tons = million tons. He is trolling, that would be 10,000,000,000 pounds. (10 billion.) Now how the fuck would that come out out of 100 grams?
    i dont even know how you got the parent mater amount, ho wam i supposed to finish it D:

    Quote Originally Posted by Saboteur View Post


    AHAHAHAHAHA


    do it.
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    Quote Originally Posted by Ian View Post
    i only learned neutrons, electrons and protons in my high school at 11th grade in chemistry.




    college freshmen
    isnt that all your supposed to learn?
    thats all i see my chem. friends studying...

  3. #18
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    @deadskulz

    Updated post:

    Quote Originally Posted by Disturbed View Post
    6.25 Grams of parent material left.

    How? Half life of a radioactive material is x. Meaning, every x years the amount of radioactivity will have dropped by 50%. See where this is going? Find the daughter material yourself.

    And mega tons = million tons. He is trolling, that would be 10,000,000,000 pounds. (10 billion.) Now how the fuck would that come out out of 100 grams?


  4. #19
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    I took chem & physics class - I should know this lol. I remember doing this :/

    Imma guess:

    So it's done 20,000\5,000 cycles - so it's done 4 cycles.

    100/2 = 50
    50/2 = 25
    25/2 = 12.5
    12.5/2 = 6.25

  5. #20
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    Moved to homework & Learning section


     


     


     



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    deadskulz (03-13-2011),[MPGH]Disturbed (03-13-2011)

  7. #21
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    Quote Originally Posted by Disturbed View Post
    ........
    Quote Originally Posted by jeremy6996 View Post
    ..............
    6.25 Grams of parent material left.

    How? Half life of a radioactive material is x. Meaning, every x years the amount of radioactivity will have dropped by 50%.
    So it's done in 20,000\5,000 cycles.

    Code:
    100/2 = 50
    50/2 = 25
    25/2 = 12.5
    12.5/2 = 6.25
    6.25 = parent material left after 20,000 years.
    See where this is going?

    100 - Parent material left = daughter material.
    Last edited by Disturbed; 03-13-2011 at 06:06 PM.


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    deadskulz (03-13-2011)

  9. #22
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    basically, there are 4 half lifes going on here thus:

    100/2=50/2=25/2=12.5/2=6.25

    parent: 6.25
    daugther: 92.75g

    though i might have mixed up he two, I haven't done half-lives in a while, I'm on molarity right now.

  10. #23
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    Quote Originally Posted by Sinner99 View Post
    umm lol why r u guys talking bout school
    This is the Homework and Learning Section that's why.
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