# Math Help - unit conversion help

1. ## 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. $( atm ft^{3} lb-mol^{-1} ^o R^{-1})$

$R= 8.314 J mol^{-1} K^{-1}$

2. 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"

3. 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.

4. 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.

5. If you don't know what units are being used, I don't see how you can get that.