Session 4.3 Using Maple to change units of the Gas Constant with data from Felder and Rousseau

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restart;

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Rg:=10.73*ft^3*psia/(lbmol*R);The gas constant as given on the back cover of Felder & Rousseau.  Note R is used for the absolute temperature unit in the English system, so Rg is used for the gas constant.

Rg := 10.73*ft^3*psia/(lbmol*R)

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lbm:=453.593*g;From the front of Felder & Rousseau

lbm := 453.593*g

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lbmol:=lbm/g*mol;psia:=lbf/inch^2;Using the definitions of lbmol and psia.

lbmol := 453.593*mol

psia := lbf/inch^2

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Rg;

0.2365556788e-1*ft^3*lbf/(inch^2*mol*R)

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inch:=ft/12;

inch := 1/12*ft

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Rg;

3.406401774*ft*lbf/(mol*R)

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R:=K/1.8; lbf:=1/0.7376*J/ft;From the front of F and R

R := .5555555556*K

lbf := 1.355748373*J/ft

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Rg;F and R gives 8.314 J/(mol*K) on the back cover.

8.312802593*J/(mol*K)