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Thread: Chem. Help

  1. #1 Chem. Help 
    New Member
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    Sep 2006
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    Could someone help me out with the following?


    Consider the representation of a mixture below. If each circle represents 1.86x1022 atoms, how many moles of water molecules are in the mixture?

    (imagine that there are 9 oxygen "circles" and 12 hydrogen circles)


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  3. #2  
    Forum Sophomore
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    you will have to use Avogadro's Number:
    6.0221415 × 10^23 atoms or molecules / mol


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  4. #3  
    Forum Freshman César's Avatar
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    I would say that he will have to use Avogadro's constant (because Avogadro's number has no units).

    Best regards,

    César
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