Assume we have three states of saturated vapor R-134a at +40 C, 0 C, and - 40 C. Calculate the specific volume at the set of temperatures and corresponding saturated pressure assuming ideal-gas behavior. Find the percent relative error = 100(v-vg)/vg with vg from the saturated R-134a table. How do I approach this problem?

what is R-134a? i'm assuming that you would use the ideal gas law, PV=nRT

"1,1,1,2-Tetrafluoroethane [R-134a] is an inert gas used primarily as a “high-temperature” refrigerant for domestic refrigeration and automobile air conditioners." - http://en.wikipedia.org/wiki/1,1,1,2-Tetrafluoroethane

PV=nRT

solve for V

What would n and T be?

n is moles T is temperature

I know what n and T are, but how do I find n? T is given...

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