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Thread: Calculating the mole?

  1. #1 Calculating the mole? 
    Forum Freshman
    Join Date
    Jul 2005
    Posts
    91
    Hi please could someone look at the following statement for me?

    "Thus, if 0.171 mole of NaCl is dissolved in 1.00 dm^3 of water, so the concentration of the solution is 0.171 mole dm^-3.

    In words the second part of this statement reads to me, "so the concentration of the solution is 0.171 mole per dm to the minus 3. But this clearly doesn't seem to make any sense. So am I right to assume that it should simply still read in words ""so the concentration of the solution is 0.171 mole per dm cubed" and that the above is just a shorthand way of writing this?

    Please help I'm stuck!!


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  3. #2  
    Forum Bachelors Degree
    Join Date
    Apr 2009
    Posts
    416
    in mathematics x^-y = 1/(x^y)

    the same is true for units, so in short yes, you are correct.


    physics: accurate, objective, boring
    chemistry: accurate if physics is accurate, slightly subjective, you can blow stuff up
    biology: accurate if chemistry is accurate, somewhat subjective, fascinating
    religion: accurate if people are always right, highly subjective, bewildering
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