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-   -   The mole (https://www.askmehelpdesk.com/showthread.php?t=301777)

  • Jan 10, 2009, 01:27 PM
    beauty lux
    The mole
    I truly am confused by this question. It gives no specific details.
    Here it is.

    Calculate how long a chain of paper clips would be (in inches) if you had one mole of them.

    Can someone please answer this question, or at least guide me in the direction?
  • Jan 10, 2009, 01:30 PM
    Curlyben
    Break it down into things you know.

    How many atoms in a mole ?
    AND
    How long is an average paper clip ?

    Hint: The answer is a VERY large number.
  • Jan 10, 2009, 01:44 PM
    beauty lux

    Yea I kind of figured that.
    BUT
    The big factor in this is that I just enrolled in chemistry..
    Literally I don't know how to count atoms. How atoms are linked to moles or anything..
  • Jan 10, 2009, 01:51 PM
    Curlyben
    A Mole of atoms has a definition, what is it ?

    Basically there are X atoms in a mole, what is X?

    Have a read of this: http://en.wikipedia.org/wiki/Mole_(unit)
  • Jan 10, 2009, 02:00 PM
    beauty lux
    Okay.
    6.02*10 to the 23?
  • Jan 10, 2009, 02:02 PM
    Curlyben
    yep that's it.



    The rest is easy.
    Isn't learning fun ;)
  • Jan 10, 2009, 02:03 PM
    beauty lux
    :)
    What about the rest?
    This is totally confusing
  • Jan 10, 2009, 02:05 PM
    Curlyben
    Well you know what value a mole is, so now multiply by the length of a paperclip.

    Then BINGO...
  • Jan 10, 2009, 02:07 PM
    beauty lux
    Okay.one last thing.
    I am truly asking this question
    How do you count the ruler marks.
    There's like 15marks and I thought a normal ruler was different.
  • Jan 10, 2009, 02:10 PM
    Curlyben
    Now there you've got me.
    Normally the small marks are th's

    To be honest the actual length isn't really that important.
    What they are looking for here is that you have researched what a mole is.
    After all paperclips come in tons of different sizes.
  • Jan 10, 2009, 02:13 PM
    beauty lux
    Okay
    Thank you sooo much!
  • Jan 10, 2009, 02:16 PM
    Curlyben
    No worries.
    Glad to help.
  • Jan 10, 2009, 02:16 PM
    beauty lux
    One more thing.
    Okay so you helped me find the 6.02*10 23 thingy.
    Now I have the measure of the paperclip.
    1 4/16
    Now how would I use the conversion chart to do that.
    The answer has to be in inches.
    Would it be a multiple step problem?
  • Jan 10, 2009, 02:19 PM
    Curlyben
    Well the paper clip is X inches

    and a Mole () is

    so it's simply

    Inches

    Make sense ?
  • Jan 10, 2009, 02:22 PM
    beauty lux

    Lol sort of.. but then again the fraction is going to get me.
    Would the answer be a mixed number or fraction or just a whole number?
    I'm so annoying
  • Jan 10, 2009, 02:24 PM
    Curlyben
    Hey make it easy on yourself and say the paperclip is 2 inches ;)

    Did they give you the paperclip to use or was it one you found in the house.
  • Jan 10, 2009, 02:27 PM
    beauty lux
    One I found in the house.
  • Jan 10, 2009, 02:30 PM
    Curlyben
    Cool, so juts say it was 2 inches.
    Makes thing easier all round.
  • Jan 10, 2009, 02:31 PM
    beauty lux
    Okay. I think I have the answer.would the answer be 12.04*10 to the 23rd?
  • Jan 10, 2009, 02:35 PM
    Curlyben
    That's it.
    Remember the answer isn't the whole problem.

    You need to show you whole working as I laid out in #14 above.
    That's how you get the full marks.

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