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Math Help - unit conversion help

  1. #1
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    unit conversion help

    You find a useful equation in an old textbook. There is a sample calculation but suspect that the value of the universal gas constant used   (0.073 atm  ft^{3} lb-mol^{-1}^o R^{-1}) is wrong. what is the correct value in these units.  ( atm ft^{3} lb-mol^{-1} ^o R^{-1})

     R= 8.314 J mol^{-1} K^{-1}
    Last edited by Tweety; October 5th 2010 at 11:03 PM.
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  2. #2
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    You appear to be using "R" both on the left as the gas constant and on the right as a temperature measurement. Is that correct? And does the "R" as temperature mean degrees "Reamur" or "Rankine"
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  3. #3
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    I don't know, I have never heard of the terms 'reamur' or rankine', were just covering dimensional analysis/ unit conversion in class. I copied this question straight out of my work book.

    I am not able to make sense of this myself, but others in my class got the correct answer.
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  4. #4
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    If it helps, I found out the correct answer is  0.730 \\\\\ atm\\\\\\\\\\ ft^{3}\\\\\\\\\ lb-mol^{-1} ^{o}R^{-1}

    I however, dont know how to work this out.
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  5. #5
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    If you don't know what units are being used, I don't see how you can get that.
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